The Royal Observatory is the historic home of British astronomy, Greenwich Mean Time (GMT) 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.
Visit the Royal Observatory, located in Greenwich, for an experience like no other! Download the Smartify app for access to the official audio guide for your visit. Exclusive Early Access Book Exclusive Early Access and see the Royal Observatory before the crowds! Enjoy a 45-minute tour with an expert guide around one of Britain’s most historic buildings. Learn about how the Prime Meridian came to be in Greenwich and the history of Greenwich Mean Time (GMT). You’ll also have access to historic gems including the Great Equatorial Telescope, Wren’s Octagon Room, and the Harrison Clocks – without the crowds!