Royal Observatory Greenwich & Prime Meridian Entry Ticket London in London
London, United Kingdom

Royal Observatory Greenwich & Prime Meridian Entry Ticket London

Outty Ranking 64 4.1 · 405 traveler reviews2 hoursFrom $12

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September 2026

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Adults

Age 13 and over

2

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Age 12 and under

0

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From, per person$12
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Outty Ranking

64/100

Solid Choice. Our proprietary evaluation. How we score

Traveler rating

4.1/5

Based on 405 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.

Quick answer

Is Royal Observatory Greenwich & Prime Meridian Entry Ticket London worth booking?

Royal Observatory Greenwich & Prime Meridian Entry Ticket London is a 2-hour experience in London, United Kingdom, from $12 per person. It scores 64 out of 100 on the Outty Ranking, which we label “Solid Choice, based on a 4.1/5 rating across 405 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.

Outty Ranking
64 / 100
Rating
4.1/5 (405)
Duration
2 hours
From
$12 per person

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

What you get

    About this experience

    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.

    What's included

    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

    Not included

    • Transportation to/from attractions

    What you'll see and do

    1. 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.

      Admission included

    Where it starts and ends

    Meeting point

    Royal Observatory Greenwich

    Blackheath Avenue, Greenwich Park, London, SE10 8XJ, United Kingdom

    Hotel pickup

    No pickup: everyone meets at the start point.

    Ends at

    Royal Observatory Greenwich · Blackheath Avenue, Greenwich Park, London, SE10 8XJ, United Kingdom

    Before you book

    Cancellation
    For a full refund, cancel at least 24 hours before the scheduled departure time.
    Languages
    de, pt, ko, cmn, yue, en, it, fr, es
    Ticket
    Mobile Only
    Runs on
    Every day
    Group size
    Up to 14 travelers per booking
    Operated by
    National Maritime Museum

    Know before you go

    • 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

    Photos

    Royal Observatory Greenwich & Prime Meridian Entry Ticket London in London, photo 2Royal Observatory Greenwich & Prime Meridian Entry Ticket London in London, photo 3Royal Observatory Greenwich & Prime Meridian Entry Ticket London in London, photo 4Royal Observatory Greenwich & Prime Meridian Entry Ticket London in London, photo 5Royal Observatory Greenwich & Prime Meridian Entry Ticket London in London, photo 6Home to GMT

    What travelers are saying

    Outty’s summary of the themes that recur across 408 traveler reviews. Written by us, not quoted from reviewers.

    The guide

    3 mentions

    Travelers single out the guide as the reason the experience works.

    Photo opportunities

    3 mentions

    The views and photo stops come up again and again.

    Value for money

    3 mentions

    Travelers feel they got more than they paid for.

    Knowledge and storytelling

    2 mentions

    Reviewers describe the commentary as informative rather than scripted.

    Good for families

    2 mentions

    Reviewers traveling with kids report it landed well with their group.

    Traveler reviews

    408 verified traveler reviews for Royal Observatory Greenwich & Prime Meridian Entry Ticket London. Ratings and reviews provided by Viator and Tripadvisor.

    5 star
    220
    4 star
    88
    3 star
    49
    2 star
    26
    1 star
    25
    Sort
    alexandramC9895ZP · August 2026

    Royal observatory

    Beautiful views of London but we have an easily bored child

    via Tripadvisor

    CHRISTINE_D · August 2026

    Informative, Passionate Presenter at the Observatory

    Had general admission ticket, however, could pay £5 extra for a guided tour which was most informative and would thoroughly recommend this. Also, a most interesting 10 mins talk about the moom structure at the start. Must get photo at the 0° Meridian!

    via Viator

    jimcM6966GO · August 2026

    Keep your eye on the ball!

    Paul is an amazing story-teller and perfect guide! So worth the few extra dollars. Loved every minute of this experience.

    via Tripadvisor

    Vincent_C · August 2026

    A wonderful and...

    A wonderful and worthwhile experience I recommend this to all that can Very interesting site the folks were nice

    via Viator

    marcbanting · August 2026

    £18 to see a line in the floor

    £18 to see a line in the floor and a telescope that you can’t see through. The view is great but you don’t need to pay £18 for the same view. Unless you’re fascinated with the astronomers and want to see their photos save your money. There’s nothing to ‘observe’

    via Tripadvisor

    Good to know

    Duration
    2 hours
    Free cancellation
    Up to 24h before
    Minimum age to book
    All ages
    Availability
    Bookable today
    Runs on
    Every day
    Price range
    $12 to $25
    Hotel pickup
    No pickup, meet at start point
    Booked in 30 days
    142
    Verdict
    Solid Choice

    Why this scores 64

    The Outty Ranking is a weighted composite. Here is how this experience performed on each component.

    Traveler sentiment (30% weight)38
    Review evidence (18% weight)80
    Booking momentum (14% weight)76
    Value for money (12% weight)100
    Listing quality (10% weight)75
    Local standing (8% weight)0
    Booking flexibility (8% weight)100

    Royal Observatory Greenwich & Prime Meridian Entry Ticket London: questions travelers ask

    Practical detail on this experience, plus the wider planning questions for London.

    How much does Royal Observatory Greenwich & Prime Meridian Entry Ticket London cost?

    +

    Prices start at $12 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in London usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.

    How long does Royal Observatory Greenwich & Prime Meridian Entry Ticket London take?

    +

    Plan for about 2 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in London is not rushed.

    Is Royal Observatory Greenwich & Prime Meridian Entry Ticket London worth it?

    +

    It holds an Outty Ranking of 64 out of 100, which we label "Solid Choice". That score blends traveler sentiment (4.1/5 across 405 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in London, and how flexible the cancellation terms are.

    Can I cancel or reschedule Royal Observatory Greenwich & Prime Meridian Entry Ticket London?

    +

    Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.

    Is Royal Observatory Greenwich & Prime Meridian Entry Ticket London suitable for kids and families?

    +

    Yes, all ages are welcome. Families should still weigh the 2-hour running time, and strollers are easier on the earlier, quieter departures.

    How far in advance should I book Royal Observatory Greenwich & Prime Meridian Entry Ticket London?

    +

    Around 142 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in London can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.

    What should I bring or wear?

    +

    Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in London and add a light layer if any part of the 2-hour experience runs outdoors or after sunset.

    Where does Royal Observatory Greenwich & Prime Meridian Entry Ticket London start and how do I get there?

    +

    The exact meeting point and directions are on your voucher once you book, and they sit in central London within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.

    What are the best things to do in London?

    +

    London's best attractions split cleanly: the museums are free and need no booking, so the paid market is about views, theatre and getting out of the city for a day. That makes value scoring unusually important here, and the Outty Ranking penalises anything charging premium prices for access you could get for nothing. On Outty we rank every London experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Soho Music & Historic Pubs Tour, London Small Group Tour of Historical Pubs, The Great British Rock and Roll Walking Tour. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.

    When is the best time to visit London?

    +

    May to September for long evenings, December for the Christmas markets. Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.

    How many days do you need in London?

    +

    Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.

    Do I book through Outty or through the operator?

    +

    Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.

    Ready to lock in your spot?

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