History-making discoveries and cutting edge astronomy at the Home of Greenwich Mean Time
Awe-inspiring science, historic locations and stunning views combine at the Royal Observatory Greenwich, making it an unmissable day out in London.
Find out more about what to expect at the Home of Greenwich Mean Time.
Place one foot in the west and one in the east at the Prime Meridian of the world.
Learn all about Greenwich Mean Time (GMT) and how Greenwich came to be the home of time.
The Great Equatorial Telescope is the largest of its kind in the UK.
Anyone visiting Greenwich can see the telescope's distinctive 'onion dome' roof when they look up the hill towards the Royal Observatory. But to truly appreciate the scale of the Great Equatorial Telescope, you have to step inside...
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Get up close and personal with the stars in one of our planetarium shows led by one of our expert astronomers. Amazing visualisations and real-life space photography combine to provide a truly unique view of our night sky, while live commentary from Observatory astronomers help to make sense of the universe.
Please note that shows are not included with entry to the historic Observatory; find times, tickets and prices for all our shows here.
Get hands-on with a telescope and discover fascinating facts about the Universe this summer!
Every weekend a space-tastic team of Observatory Explainers will be around the site, delivering live science demonstrations and astronomy sessions for all ages.
Follow the tour on your phone! We're partnering with Smartify, the world's most downloaded museum app, to bring you this brand new way to explore the Royal Observatory. Simply download the app to begin.
The Octagon Room is the oldest part of the Royal Observatory Greenwich.
It was commissioned by King Charles II, designed by famed architect Sir Christopher Wren and completed in 1676.
Astronomical instruments and clock line the walls and windows, just as they would have been in the Observatory's early years.
A Unesco World Heritage site in front, the towers of Canary Wharf behind and the snaking River Thames beyond – surely this view is worth the trip alone? Look to the left towards central London and see if you can spy the London Eye, St Paul's Cathedral and more.
Accurately tell the time with this Shepherd Gate Clock, the first to ever show Greenwich Mean Time (GMT) to the public.
Learn about John Harrison’s epic race to solve the problem of Longitude and admire the craftsmanship of the world famous Harrison timekeepers, including H1, H2, H3 and H4.
Visit the telescope that determined the exact location of the Prime Meridian.
The gracious apartments of Flamsteed House are where the Astronomers Royal lived and worked. Careful observation combined with intimate family life for these astronomers – proof that working from home is nothing new.