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

Join a virtual planetarium show

Join our astronomers online and explore the universe from home with our live planetarium shows and Q&As

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Time to explore

Hypnotised yet? 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

Plan your visit

Tickets and Opening

Adult: from £16.00
Child: from £8.00

Weekdays: 10.30am-4pm

Weekends: 10am-4pm

More info

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

What’s On

Showing upcoming online events. See everything that is happening

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

  • Royal Observatory
  • Meridian Line
  • Free Museums
  • Planetarium Shows
  • Cutty Sark
Adult £16
Child £8
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