Stand on the Prime Meridian

Revel in the feeling of standing on the line that splits the Earth into the eastern and western hemispheres. Keep an eye open for the green laser that is directed at the London Skyline from the top of the Greenwich Park hill marks the Prime Meridian. This is an excellent place to grab a photograph of yourself! Take the opportunity to learn about the story behind the Greenwich Mean Time.

Explore other Iconic Centres in Greenwich

Learn more about the ingenious clocks made by John Harrison to help sailors determine their longitude at sea, drastically reducing the danger of ships, crew, and cargo being lost to the waters. The clocks themselves look incredibly sophisticated and beautiful. There are four versions of the clocks, H1 to H4, the H1 being released in 1735. Along with others, it was widely heralded as a great milestone in the history of clock-making. Science enthusiasts are sure to appreciate the insight and creativity behind Harrison’s revolutionary timekeepers.

Take the chance to stand beneath the Great Equatorial Telescope, a 28-inch refracting telescope that is the largest of its kind in the UK. Originally designed for astrophotography, it has become indispensable for the observatory's research into double stars. Don't miss out on seeing the telescope's distinct "onion roof" when you look up at the Royal Observatory.

Discover the Octagon Room and the Time Ball

Filled with archaic timepieces and instruments, the Octagon Room at Flamsteed House is the oldest part of the Royal Observatory Greenwich. Commissioned by King Charles II, it has been designed by Sir Christopher Wren. The light-filled space is designed to provide an uninterrupted view of the night sky to the astronomers. The time ball located on top of Flamsteed House still drops on a daily basis at 1pm! First used in 1883, this is one of the world's earliest public time signals.

Opt for this pass to visit two exciting attractions in one day - the Royal Observatory and Cutty Sark. A historical sailing ship that was the fastest of its time, Cutty Sark is now an award-winning visitor attraction. From amazing views of the main deck to exploring the lower hold, there is plenty to see and do for the entire family.

You can also tune in to an audio guide that will give you a glimpse of what life was really like at the sea, along with thrilling tales from the history of Cutty Sark.