Royal Observatory Greenwich & Prime Meridian Entry Ticket London
Overview
Available languages
2 hours
Mobile ticket
A visit to London is not complete without visiting the Royal Observatory Greenwich where you will stand astride the Prime Meridian Line, with one foot in the east and the other in the west, at the home of GMT (Greenwich Mean Time). Walk in the footsteps of the Astronomers Royal, discover their stories, and experience the past, present and future wonders of astronomy, space and the stars. Enjoy dramatic views of London across Greenwich Royal Park, the City of London and the River Thames.
Additional Info
Wheelchair accessible
Service animals allowed
Public transportation options are available nearby
Suitable for all physical fitness levels
Children under the age of 4 years are free to enter the attraction
Children must be accompanied by an adult
Please note that certain parts of the attraction are not fully accessible, please contact the attraction if you need assistance planning your visit
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What‘s Included
FREE to download audio-guide available in 10 different languages
Attraction admission ticket
All Fees and Taxes
National Maritime Museum and Queen's House are free to visit and within short walking distance
Transportation to/from attractions
Meeting and Pickup
Meeting points
End points
This activity ends back at the meeting point.
What To Expect
Royal Observatory Greenwich
Make your way to the Royal Observatory Greenwich which is located on a hill in Greenwich Royal Park. As you do, you will enjoy dramatic views of London across Greenwich Royal Park, the City of London and the River Thames. Once inside, you can pick up a complementary audio guide. There are 7 languages available. Your visit will begin in the Meridian Courtyard where you will stand astride the Prime Meridian Line, with one foot in the east and the other in the west at the home of Greenwich Mean Time (GMT). The tour will take you through Flamsteed House where you will walk in the footsteps of the Astronomers Royal. Visit the Octagon Room which was designed by Sir Christopher Wren and is one of the best preserved Wren interiors in London. See Harrison’s clocks, the inventions that changed the world. Discover the Shepherd Gate Clock, mounted outside, which was the first clock to show Greenwich Mean Time to the public. Learn about the discoveries of great scientists and inventors based at or associated with the Royal Observatory, including Harrison, Newton, Halley, Bradley, Maunder, Harrison, Airy, Einstein. The bright red Time Ball on top of Flamsteed House is one of the world’s earliest public time signals and was first used in 1833 and still operates today. Don’t miss the Great Equatorial Telescope, located in the huge iconic onion dome, which gave astronomers new views of the universe over 100 years ago. Located in the UNESCO World Heritage Site of Maritime Greenwich, the National Maritime Museum and the Queen’s House are both located within a short walking distance from the Observatory and are free to visit. Cutty Sark, the world’s sole-surviving tea clipper is now an award-winning museum and visitor experience and is a must-see when visiting Greenwich.
Options
Royal Observatory Greenwich & Prime Meridian Entry Ticket London
Reviews
363 reviews
Total reviews and rating from Viator & Tripadvisor
Excellent
Sophia G,
Nov 9, 2025
- Review from Tripadvisor
5.00Had a great trip to the Greenwich observatory with an amazing tour guide. Informative and interesting. Worth a trip. Great coffee bar outside the observatory too.
Interesting but limited
Graham L,
Oct 18, 2025
- Review from Tripadvisor
4.00Interesting museum with interesting Harrison timepieces and the meridian line. Located on a hill in Greenwich park offering excellent views of the Maritime museum
Worth the climb, ought to be included in a Greenwich tour.
ALH2025,
Oct 17, 2025
- Review from Tripadvisor
4.00Fascinating view of how time keeping influences maritime navigation. The building is very impressive as is the history of maritime times keeping. The meridian line is a must see owing to its significance. Would be even better if folk didn’t hog the photo opportunity - you don’t need 30 identical shots of you making a peace sign astride of the line whilst pulling a stupid face now do you? Some good views of Greenwich and surrounding Thames views from the hill top.
Greenwich, the zero of the earth
Gizmo2Misha,
Oct 13, 2025
- Review from Tripadvisor
4.00A bit expensive but worth a visit A little walking to get there by public transport The visit is very interesting of this place a bit mutic. The zero of the meridians of our planet But the observatory is more than that and shows particularly the development of maritime clocks that had to abandon the balance to be able to operate at sea to provide the time necessary for the accurate positioning of vintage ships
Fantastic Museum with great guides
MooseA330,
Oct 11, 2025
- Review from Tripadvisor
5.00A well curated Museum with free talks throughout the day. The visit was on my top 3 things to do in London after reading Dava Sobels book Longitude. The tour guides were knowledgeable and engaging
Great self guided tour
Kristina H,
Oct 3, 2025
- Review from Viator
5.00This was a very easy self guided tour. It was very interesting to learn how relatively recent all of these “time” things are. I wish we had planned for more time to wander around the town.
Royal Observatory is a...
janet c,
Sep 30, 2025
- Review from Viator
5.00Royal Observatory is a once in a lifetime opportunity to stand on two hemispheres at the same one. Must SEE! GMT.. Zulu!
Well worth it.
jt1999x,
Sep 23, 2025
- Review from Tripadvisor
5.00One of my most favourite things. If you love science, space and history of watches. It’s perfect for you. Great to be in the Herat of time keeping history.
My parents marked their own timeline with the Prime Meridian
516nv,
Sep 20, 2025
- Review from Tripadvisor
5.00I took my parents to see the famous Greenwich Prime Meridian on their wedding anniversary. I bought the tickets online, prior to taking them. They loved the beautiful sights of Greenwich Park, as well as the history and science of the Prime Meridian Line. They were also fascinated by the Great Equatorial Telescope. We had to enter the scenic Greenwich Park and then climb the hill,where we saw some of London`s best views. On reaching the top, there was a small queue near the building. After you get inside, you also get to see instruments of astronomy and navigation. The famous Greenwich line is marked by a metallic strip on the ground,with major cities of the world marked along the line depicting the Western and Eastern hemispheres. We spent roughly 2 to 2.5 hours at this place, as we also wanted to read more on the instruments on display. My parents deeply cherish this experience of standing on this famous line together, as it was a reminder of their honeymoon days when they crossed the International Date Line,180 longitude degrees from this spot. Thus they marked a timeline of their own.
Save your money, not worth it. Super expensive
JaneHold,
Sep 13, 2025
- Review from Tripadvisor
2.00Stunning views from the Observatory hill, you can stand on the meridian line without going inside, there is a little swing gate to the side of the measures plaque. Honestly this is super expensive and there's not a lot to see, nothing interactive for the kids, minimal videos. You can download an audio tour for free from on the ARTIFY app which is informative but really it's the most amount of money we have paid to see the least amount. Certainly wont be going again. Rather save your money ans spend your time at the Maritime Museum at the bottom of the hill.
From £24.60
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Operated by National Maritime Museum