The Royal Observatory Greenwich

Blackheath Avenue
SE10 8XJ

Opening Times

Daily: 10am to 5pm 

Please note: From June 17th until August 31st the Royal Observatory will be opening from 9am – 6pm (Saturday & Sunday only) with full access to the North site.

The Royal Observatory (North) will be open half an hour later during the month of May. The last entry will be at 5pm for a site closure of 5.30pm. This excludes the 1st May 2019 and 16th May 2019 when the closing times will be 5pm with last entry at 4.30pm.

The Royal Observatory Greenwich is the historic home of British astronomy, Greenwich Mean Time and the world-famous Meridian Line. Established in the 17th century and designed by Sir Christopher Wren, it was from here that the great scientists of the time precisely mapped the stars to help navigate at sea.

Stand aside the Meridian Line with one foot in the eastern hemisphere and one in the west. The Greenwich Meridian was chosen to be the Prime Meridian of the World back in 1884 and is world famous ever since. Walk in the footsteps of the Astronomers Royal, discover their stories, and experience the past, present and future wonders of astronomy, space and the stars.

Must see attractions include the Great Equatorial Telescope, Harrison’s clocks, the Shepherd Gate Clock, the Time Ball and the famous Octagon Room.

Enjoy dramatic views of London across Greenwich Royal Park, the City of London and the River Thames. Located alongside the Observatory is the Peter Harrison Planetarium where you can touch a 4.5 billion year-old meteorite, watch how the universe was formed, guide a space mission and unravel the mysteries of the cosmos.


  • Greenwich
  • Cutty Sark (for Maritime Greenwich)
  • Elverson Road
  • Lewisham
  • Island Gardens
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