Ticketed Free for members

Essential Information

Royal Observatory
Price Included with entry to the Royal Observatory
  • Discover the story of the Octagon room, commissioned by King Charles II and designed by Sir Christopher Wren
  • Learn more about the astronomical objects and timepieces on display.
  • Look out at the view from the high windows at Greenwich Park, the Thames, and beyond. 

Brilliant design, bad location?

The beautiful Octagon Room at Flamsteed House was created by Christopher Wren as part of his original Royal Observatory design, commissioned by Charles II. It was designed so that the Astronomer Royal could observe celestial events in the night sky. 

For this reason, the room has huge windows – but the positioning of Flamsteed House was not ideal. None of the walls were aligned with a meridian, meaning positional observations were not possible.

However, the Octagon Room remains of historical importance because it is one of the few Christopher Wren-designed interiors that you can see in London today. 

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
  • Planetarium Shows
Adult £16
Child £8
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

  • Two sites, one ticket
  • Cutty Sark
  • Royal Observatory
  • Guaranteed entry time
Adult £25
Child £12.50

Member tickets

  • Free entry
  • Priority booking
  • Membership card number required
Members go free
Advance booking essential
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