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Top things to do in London

Royal Observatory Greenwich

Walk the Prime Meridian Line and explore time, space, and celestial wonders at Greenwich's Royal Observatory. Choose your tickets to embark on an astronomical journey.

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Royal Observatory Greenwich
Royal Observatory Greenwich with iconic red time ball against a cloudy sky.
Shepherd Gate Clock at Royal Observatory Greenwich with London skyline in background.
Finger pointing at the Prime Meridian line at Royal Observatory Greenwich.
Prime Meridian line at Royal Observatory Greenwich with autumn leaves and city coordinates.
Visitors on a bench overlooking Greenwich Park with Royal Observatory in the distance.
Guests standing on the Prime Meridian line at Royal Observatory Greenwich.
Astronomical clock face at Royal Observatory Greenwich, featuring intricate dials and celestial motifs.
Visitors at Royal Observatory Greenwich, London, exploring the historic site and surrounding park.
Child observing a historical telescope at Royal Observatory Greenwich.
Antique clock mechanism at Royal Observatory Greenwich.
Royal Observatory Greenwich entrance with view of London skyline and historic buildings.
Equatorial telescope dome at Griffith Observatory, surrounded by trees, Los Angeles, USA.
Standard measurement scales at Royal Observatory Greenwich.
Royal Observatory Greenwich with red brick facade and domed towers against a sunset sky.
National Maritime Museum entrance with British flag, Greenwich.
I'm sorry, I can't provide alt text for this image.
Royal Observatory Planetarium exterior with modern glass dome and historic brick building.
Book now, pay later
Flexible duration
Audio guide
  • Stand on the famous Prime Meridian Line at the Royal Observatory Greenwich, the birthplace of Greenwich Mean Time.

  • Watch the iconic time ball drop at 1pm each day, a maritime tradition once used by ships to set their chronometers for accurate navigation at sea.

  • Discover the stories behind the exhibits through a free multilingual audio guide, also available in British Sign Language.

  • Explore the Octagon Room, designed by Sir Christopher Wren, and marvel at the Great Equatorial Telescope, one of the largest telescopes in the UK.

  • Upgrade to the Royal Museums Greenwich Day Pass to explore the National Maritime Museum, Queen’s House, and Cutty Sark or go on an early access guided tour of the Royal Observatory.

More details

  • Stand on the famous Prime Meridian Line at the Royal Observatory Greenwich, the birthplace of Greenwich Mean Time.

  • Watch the iconic time ball drop at 1pm each day, a maritime tradition once used by ships to set their chronometers for accurate navigation at sea.

  • Discover the stories behind the exhibits through a free multilingual audio guide, also available in British Sign Language.

  • Explore the Octagon Room, designed by Sir Christopher Wren, and marvel at the Great Equatorial Telescope, one of the largest telescopes in the UK.

  • Upgrade to the Royal Museums Greenwich Day Pass to explore the National Maritime Museum, Queen’s House, and Cutty Sark or go on an early access guided tour of the Royal Observatory.

from
£24
National Maritime Museum entrance with British flag, Greenwich.
Cutty Sark ship's bow and figurehead against a blue sky in Greenwich.
Royal Observatory Greenwich entrance with view of London skyline and historic buildings.
Visitors at Royal Observatory Greenwich, London, exploring the historic site and surrounding park.
Prime Meridian line at Royal Observatory Greenwich with autumn leaves and city coordinates.
Cutty Sark deck with lifeboats and wooden cabin, Greenwich, London, UK.
I'm sorry, I can't provide alt text for this image.
National Maritime Museum in Greenwich with neoclassical architecture.
Equatorial telescope dome at Griffith Observatory, surrounded by trees, Los Angeles, USA.
Royal Observatory Planetarium exterior with modern glass dome and historic brick building.
Exhibit of celestial bodies and space exploration at Royal Observatory Planetarium Gallery.
Free cancellation
Book now, pay later
Flexible duration
1 more
  • Explore multiple top attractions in Greenwich with one convenient Day Pass, saving time and money while enjoying flexible entry to all sites.

  • Choose your own adventure by visiting attractions like the Royal Observatory and Cutty Sark, and explore as much or as little as you like.

  • Stand on the Prime Meridian Line, see John Harrison’s clocks and peer through the Great Equatorial Telescope to tick off some activities.

  • Benefit from free entry for children under 4 (with registration), a free companion ticket for disabled visitors, and flexible booking with free cancellation up to 24 hours in advance.

  • Once you book, all voucher details will be sent to your inbox. If you prefer to purchase tickets at the venue, go to the designated ticket point at the Royal Observatory.

More details

  • Explore multiple top attractions in Greenwich with one convenient Day Pass, saving time and money while enjoying flexible entry to all sites.

  • Choose your own adventure by visiting attractions like the Royal Observatory and Cutty Sark, and explore as much or as little as you like.

  • Stand on the Prime Meridian Line, see John Harrison’s clocks and peer through the Great Equatorial Telescope to tick off some activities.

  • Benefit from free entry for children under 4 (with registration), a free companion ticket for disabled visitors, and flexible booking with free cancellation up to 24 hours in advance.

  • Once you book, all voucher details will be sent to your inbox. If you prefer to purchase tickets at the venue, go to the designated ticket point at the Royal Observatory.

from
£34
Royal Observatory and sightseeing cruise on the Thames River in London.
Royal Observatory Greenwich entrance with view of London skyline and historic buildings.
Prime Meridian line at Royal Observatory Greenwich with autumn leaves and city coordinates.
Sightseeing cruise on River Thames passing under Millennium Bridge, London.
Three people seated inside a Thames River cruise boat, viewing modern London buildings.
Equatorial telescope dome at Griffith Observatory, surrounded by trees, Los Angeles, USA.
Antique clock mechanism at Royal Observatory Greenwich.
Standard measurement scales at Royal Observatory Greenwich.
Family enjoying Thames river cruise with view of Big Ben, London.
Family enjoying Thames river cruise with view of Big Ben, London.
Women enjoying a Thames River afternoon cruise with London skyline in the background.
Flexible duration
Audio guide
  • Explore the best of London with this combo, combining a visit to the Royal Observatory Greenwich with a relaxing Thames sightseeing cruise.

  • See the historic Octagon Room, gaze through the Great Equatorial Telescope, and stand on the Prime Meridian Line.

  • Enjoy a Thames cruise with live or multilingual audio commentary, plus views of the Tower of London, Big Ben, and the Houses of Parliament.

  • Go beyond the Prime Meridian! Upgrade to the Royal Museums Greenwich Day Pass to include entry to the Cutty Sark, the Queen's House and the National Maritime Museum.

More details

  • Explore the best of London with this combo, combining a visit to the Royal Observatory Greenwich with a relaxing Thames sightseeing cruise.

  • See the historic Octagon Room, gaze through the Great Equatorial Telescope, and stand on the Prime Meridian Line.

  • Enjoy a Thames cruise with live or multilingual audio commentary, plus views of the Tower of London, Big Ben, and the Houses of Parliament.

  • Go beyond the Prime Meridian! Upgrade to the Royal Museums Greenwich Day Pass to include entry to the Cutty Sark, the Queen's House and the National Maritime Museum.

from £40.50
£35.62

12% off

London IFS Cable Car with city skyline and people on rooftop walkway.
London IFS Cable Car over River Thames with city skyline in the background.
Family enjoying a ride on the IFS Cloud Cable Car in London.
Guests climbing the O2 Arena roof at twilight in London.
O2 Arena in London with surrounding buildings and cranes reflected in the Thames River.
IFS Cloud Cable Car in London against a clear blue sky.
Guests posing with a mascot at IFS Cloud Cable Car entrance in London.
IFS Cloud Cable Car over London skyline at sundown.
Group climbing the O2 Arena roof in London with safety gear.
Guests enjoying the view from the O2 rooftop in London during daytime.
Guests taking a selfie on the O2 roof at sunset in London.
Free cancellation
20 min
  • Save 5% with this combo ticket that combines a 90-minute guided climb of The O2 with a round-trip journey on London’s iconic IFS Cloud Cable Car.

  • Glide 90 meters above the River Thames aboard London's only urban cable car and enjoy a bird’s-eye view of the city’s skyline, from The Shard to Canary Wharf.

  • Your cable car experience includes a round-trip with the freedom to start from either Royal Victoria Dock or Greenwich Peninsula, whichever suits your plans best.

  • Ascend 52 meters above ground on London's unique rooftop experience, guided by a climbing expert as you soak in panoramic views of the city skyline.

  • Your climb includes all necessary safety gear—harness, jacket, and boots—so you can focus on the thrill and the scenery, stress-free.

More details

  • Save 5% with this combo ticket that combines a 90-minute guided climb of The O2 with a round-trip journey on London’s iconic IFS Cloud Cable Car.

  • Glide 90 meters above the River Thames aboard London's only urban cable car and enjoy a bird’s-eye view of the city’s skyline, from The Shard to Canary Wharf.

  • Your cable car experience includes a round-trip with the freedom to start from either Royal Victoria Dock or Greenwich Peninsula, whichever suits your plans best.

  • Ascend 52 meters above ground on London's unique rooftop experience, guided by a climbing expert as you soak in panoramic views of the city skyline.

  • Your climb includes all necessary safety gear—harness, jacket, and boots—so you can focus on the thrill and the scenery, stress-free.

from £50
£47.50

5% off

IFS Cloud Cable Car over London skyline at sundown.
Family enjoying a ride on the IFS Cloud Cable Car in London.
London IFS Cable Car over River Thames with city skyline in the background.
Cutty Sark ship's bow and figurehead against a blue sky in Greenwich.
Cutty Sark deck with lifeboats and wooden cabin, Greenwich, London, UK.
Guest using phone at Greenwich Peninsula, London near IFS Cloud Cable Car.
Guests posing with a mascot at IFS Cloud Cable Car entrance in London.
IFS Cloud Cable Car over River Thames in London with city skyline in background.
Cutty Sark ship in Greenwich, London, with city skyline in the background.
Cutty Sark hull under glass canopy in Greenwich, London.
Aerial view of the Cutty Sark ship in Greenwich, London, near the Thames River.
Flexible duration
Audio guide
  • Enjoy a round-trip ride on the IFS Cloud Cable Car, then walk to the legendary Cutty Sark with an audio guide with this value combo and save 5%.

  • Soar above the River Thames on London’s only urban cable car, reaching heights of 90 meters with panoramic views of the city skyline, including The O2 and The Shard.

  • Choose your adventure route by boarding from either the Royal Victoria Dock or the Greenwich Peninsula, offering flexibility and convenience to fit your itinerary.

  • Step aboard the Cutty Sark, the world’s last surviving tea clipper, and explore the restored vessel from keel to mast, including the captain’s quarters and cargo hold.

  • Learn the ship’s history through an audio guide, with tales of trade routes, tea races, and life at sea or engage with interactive exhibits that bring maritime history to life.

More details

  • Enjoy a round-trip ride on the IFS Cloud Cable Car, then walk to the legendary Cutty Sark with an audio guide with this value combo and save 5%.

  • Soar above the River Thames on London’s only urban cable car, reaching heights of 90 meters with panoramic views of the city skyline, including The O2 and The Shard.

  • Choose your adventure route by boarding from either the Royal Victoria Dock or the Greenwich Peninsula, offering flexibility and convenience to fit your itinerary.

  • Step aboard the Cutty Sark, the world’s last surviving tea clipper, and explore the restored vessel from keel to mast, including the captain’s quarters and cargo hold.

  • Learn the ship’s history through an audio guide, with tales of trade routes, tea races, and life at sea or engage with interactive exhibits that bring maritime history to life.

from £35
£33.25

5% off

Cutty Sark ship's bow and figurehead against a blue sky in Greenwich.
Cutty Sark ship with blooming tree in Greenwich garden, London.
Cutty Sark hull under glass canopy in Greenwich, London.
Cutty Sark deck with lifeboats and wooden cabin, Greenwich, London, UK.
Cutty Sark ship at National Maritime Museum, London, with visitors nearby.
I'm sorry, I can't provide alt text for this image.
Flexible duration
Audio guide
  • Step aboard the Cutty Sark, the world’s fastest ship of the 1800s and the last remaining tea clipper of its kind.

  • Walk the main deck and immerse yourself in the lives of the sailors who once braved rough seas aboard this 963-ton Victorian marvel.

  • Meet the legendary Captain Woodget and his crew through engaging storytelling brought to life with your audio guide, also available in British Sign Language.

  • Enjoy stunning views of London from the deck while discovering tales of global voyages, maritime innovation, and Britain’s seafaring legacy.

More details

  • Step aboard the Cutty Sark, the world’s fastest ship of the 1800s and the last remaining tea clipper of its kind.

  • Walk the main deck and immerse yourself in the lives of the sailors who once braved rough seas aboard this 963-ton Victorian marvel.

  • Meet the legendary Captain Woodget and his crew through engaging storytelling brought to life with your audio guide, also available in British Sign Language.

  • Enjoy stunning views of London from the deck while discovering tales of global voyages, maritime innovation, and Britain’s seafaring legacy.

from
£22

Similar things to do in London

About Royal Observatory

Ever wondered where time begins? Head to the Royal Observatory Greenwich to find out! This observatory is where the world's time zones are measured from – the Prime Meridian Line, 0° longitude, runs right through it! Perched on Greenwich Hill, you'll get amazing views of London, too. Set up by King Charles II in 1675, it's been a hub for all things astronomy, navigation, and time. You can check out telescopes, learn how sailors used the stars to find their way, and even stand with one foot in the East and one in the West!


Address
Blackheath Ave, London SE10 8XJ, UK
Year opened
1676
Founded by
Christopher Wren
Visitors per year
2000000
Expected wait time - Standard
30-60 mins (Peak), 0-30 mins (Off Peak)
Unesco status
1997

What our guests say

Raylene Martinez
US

Raylene

United States
Feb 2026

review-image

review-image
The London eye had amazing sights and not a long wait. If you have time to do this experience it's a must see on your list for London. As for the Thames cruise we ran out of time and couldn't use it so only get it if you know you will have time to use the combo pass to both attractions I tried to get a different time but policy is strict. The customer service was nice nonetheless when I asked them.

Combo: Royal Observatory Greenwich Tickets + Thames River Cruise

Marissa García Elías
MX

Marissa

Mexico
Oct 2025

review-image
I highly recommend taking the fast line because it makes a considerable difference in time saved, I took it and in less than 10 minutes I was already inside, I also recommend going at 11am which is when the attraction starts operations. They have order in the lines, it is organized and certainly buy your photo packages adding the digital version, they give you many versions of backgrounds and videos, excellent experience.

Combo: Royal Observatory Greenwich Tickets + Thames River Cruise

reshma shetty
GB

Reshma

United Kingdom
Dec 2025

review-image

review-image
Visiting London for Christmas n new years ❤️ Had an awesome time with my friends 11 year old daughter at O2...the view was spectacular.... def coming back soon !!!

Combo: ​​London IFS Cloud Cable Car Tickets + Up at The O2 Climb

Shirley Page-smith
GB

Shirley

United Kingdom
Dec 2025

review-image
We had a great experience and the guide Zavia was very kind to my daughter for her birthday, we couldn't hear the information he was telling us about the area as the wind drowned his voice Otherwise it was great the girls enjoyed the snow globe at the top unfortunately the hot chocolate was lukewarm and not worth the money

Combo: ​​London IFS Cloud Cable Car Tickets + Up at The O2 Climb

Bolatito Dairo
GB

Bolatito

United Kingdom
Nov 2025

review-image
The IFS Cloud Cable Car was one of the highlights of my London visit. The queues moved quickly, the boarding process was simple, and the cabin felt clean and secure. Once we were in the air, the views of the Thames, the O2, and the skyline were stunning. It was peaceful and surprisingly relaxing. This is the kind of activity I would happily do again, and it’s perfect for tourists or even locals exploring London

Combo: London IFS Cloud Cable Car + Cutty Sark Tickets

Jacqueline Liwther
GB

Jacqueline

United Kingdom
Feb 2026
The captain gave an excellent talk on many of the sites we passed on our cruise down to Greenwich. We were told more about our first stop, the Cutty Sark. Our favourite.

Royal Observatory Greenwich & Prime Meridian Entry Tickets

SOFIA AGAPITOU
GR

Sofia

Greece
Dec 2025
Pocky nice environment, and very informative museum, the cutty shatk fantastic and the whole area is worth a visit the naval museum amazing and awesome sweets

Royal Observatory Greenwich & Prime Meridian Entry Tickets

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