Visit the Royal Observatory in Greenwich, London. Home of Greenwich Mean Time (GMT), the Prime Meridian of the world and London’s Planetarium.

The Prime Meridian line at Greenwich, with two people standing either side of the East-West divide

Stand on the Prime Meridian

East meets west at Greenwich – but why? Discover how this line in the Observatory courtyard transformed our understanding of space and time
Rainbow image of the California Nebulae

Astronomy Photographer of the Year shortlist revealed

The world's greatest space photography competition is hotting up – take a look at this year's stunning shortlist

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Plan your visit

Tickets and Opening

Adult £16
Child £8

 

Open daily

10am-5pm

  • Greenwich Station
  • Cutty Sark DLR
  • Maze Hill Station
  • Greenwich Pier

Beautifully precise

Hypnotising aren't they? The Harrison timekeepers are some of the most treasured objects in Royal Museums Greenwich – but why were these precise instruments made in the first place?

Learn more about the Harrison clocks

Find H4 in our collections

What’s On

Find Planetarium shows and Observatory events. See everything that is happening

Choose your tickets

All visitors must have a ticket to enter the Observatory. Book online in advance to guarantee entry. Planetarium shows booked separately. See all tickets and prices

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 £16
Child £8
BOOK NOW
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
Adult £24.80
Child £12.40
BUY + SAVE

Member tickets

  • Free entry
  • Priority booking
  • Membership card number required
Members go free
Advance booking essential
BOOK NOW
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
JOIN TODAY

Planetarium show

Ted's Space Adventure

  • Suitable for under 7s
  • Shows run Saturdays and Sundays
  • Daily during school holidays
Adult £10
Child £5
BOOK NOW
Images of constellations, the Moon, Mars, a comet and the Andromeda galaxy

Planetarium show

The Sky Tonight

  • Shows run Friday-Monday during term time
  • Daily during school holidays
  • Suitable for ages 7+
  • Not available for under 5s
Adult £10
Child £5
BOOK NOW
Images of each planet in the solar system and the Sun

Planetarium show

Meet the Neighbours

  • Shows run Friday-Monday during term time
  • Daily during school holidays
  • Suitable for ages 7+
  • Not available for under 5s
Adult £10
Child £5
BOOK NOW