There's so much to explore at Royal Observatory Greenwich, from historic objects, to cutting edge astronomy. 


Stand on the historic Meridian Line

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.

Don't forget to snap that important selfie and share it with us at #primemeridian.

Download the brand new audio guide

A woman holds her phone as she listens to the Royal Observatory audio tour, with the Observatory buildings in the background

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.

Find out more

People watching planetarium show

Get to know the stars in the Peter Harrison Planetarium

Get up close and personal with the stars in one of our planetarium shows led by one of our expert astronomers. Please note that shows are not included with entry to the historic Observatory - find times, tickets and prices for all our shows here.

Meet our Observatory Explainers

Royal Observatory science demos

Discover fascinating facts about the Universe, learn how to use a compass and discover the mysteries of time and space.

Our live science, navigation and astronomy demonstrations are perfect for families, and give everyone the chance to discover more about the work, life and history of the Observatory.

Please note that our demonstration schedule varies throughout the year, and sessions are not guaranteed to run. Check with a member of staff on arrival.

Find out more


Set your sights on the Great Equatorial Telescope

The historic telescope at the heart of the Observatory is one of the largest of its kind in the world. Learn about the telescope's past and its key role at the Royal Observatory since 1893. The telescope's iconic 'Onion Dome' is visible throughout Greenwich Park.

Enjoy the best view in London

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.

Find out more


Tell the time using the Shepherd clock

Accurately tell the time with this Shepherd Gate Clock, the first to ever show Greenwich Mean Time (GMT) to the public. 


Wonder at Airy’s Transit Circle

Visit the telescope that determined the exact location of the Prime Meridian.

Choose your tickets

A father and son play on the Prime Meridian Line outside the historic Flamsteed House building of the Royal Observatory

Royal Observatory

  • Guaranteed entry time
  • Audio guide included
  • Planetarium shows not included
Adult £8
Child £4
A brother and sister with their back to the camera look out from the viewpoint at the top of Greenwich Park towards historic Greenwich

Royal Museums Greenwich Day Pass

  • Cutty Sark
  • Royal Observatory
  • Guaranteed entry time
  • Planetarium shows not included
Adult £20
Child £10

Member tickets

  • Free Museums entry
  • Priority booking
  • Membership card number required
Advance booking recommended
National Maritime Museum

Become a Member

  • Unlimited entry all year
  • Royal Observatory
  • Cutty Sark
  • Planetarium Shows
  • Special exhibitions
Direct Debit One-off
Individual: £50 Individual: £60
Family: from £65 Family: from £75