Skip to main content

Take a tour of the Royal Observatory at Greenwich

11 days
left to enter

Place one foot in each hemisphere and discover how great scientists first mapped the stars and the seas by winning tickets for a tour of the Royal Observatory in Greenwich.

The Royal Observatory is home to the world-famous Meridian Line and the birthplace of Greenwich Mean Time (GMT).

You can stand astride the Meridian, wonder at the intricacies and craftsmanship of Greenwich’s groundbreaking timepieces up close, and explore the magnificent Flamsteed House, commissioned by King Charles II and once home to the Astronomers Royal.

Top things to do at the Royal Observatory

Make sure you pick up an audio guide on your visit, to help you unravel the fascinating history of this grand historic home to the complexities of space and time. And while in Greenwich, you simply have to immortalise your tour with a photo on the iconic Meridian Line: with one foot in the west and one in the east.

RMG Royal Observatory Tickets

The Royal Observatory offers one of London’s best views from the Meridian Courtyard, and on your day out a visit to Charles II's magnificent Christopher Wren-designed Octagon Room, dating from 1675, is a must. You can also chat during your tour with the expert Observatory Explainers, who will help bring the history of astronomy to life.

Discover John Harrison's groundbreaking timekeepers which solved the scientific mysteries of longitude, marvel at the UK’s largest-lensed telescope, and find yourself mesmerised by the Royal Observatory’s Camera Obscura, with its amazing moving panorama of London.

More information about the prize and venue

We are offering 75 Possibilities members and a guest the chance to visit the historic Royal Observatory.

A voucher code will be sent to all successful Possibilities members, which will be valid for 6 months from the date they are sent.

Ballot winners will each be issued two codes. Each code can be used to book a ticket to the Royal Observatory via the website Entering the code will reduce the price of the ticket to zero. Tickets can be used to access the site during normal opening hours, and will allow winners access to visit the Meridian Courtyard and Flamsteed House.

The codes provide tickets for general admission. Tickets are non-transferable, non-exchangeable and non-refundable and should not be resold. Vouchers have no cash value.

RMG Insight Astronomy

Venue information and accessibility

Venue address

Royal Observatory, Blackheath Ave, Greenwich, London SE10 8XJ.

Travel information

Accessible by walking from Cutty Sark DLR station, or by Thames Clipper to Greenwich Pier. The Royal Observatory is on top of a hill.

Accessibility information

All Royal Museums Greenwich sites have accessible toilets, and the cafés and gift shops are wheelchair-accessible.

Guide dogs, hearing dogs and assistance dogs are welcome. There is lift access, wheelchair access and a hearing support system. Please check the relevant venue’s website for accessibility information.

Visitor assistants are trained in disability awareness, so please ask a member of staff for any assistance you may need during your visit.

Ballot details

Once the ballot has closed and the winners have been drawn, they will be notified by email to confirm they can attend. Winners will be given all the necessary information about how they will receive their tickets. Tickets are non-exchangeable and non-refundable, and cannot be transferred to someone else. Ballot prizes include tickets only, no travel or accommodation is provided unless stated.

Winners will be notified within 48 hours of the ballot closing, please double check your spam/junk mailboxes as we wouldn't want you to miss out!

Links to more information

Royal Observatory website