Browse over 100 amazing attractions at Royal Museums Greenwich, including Nelson's Trafalgar coat, John Harrison's famous timepieces and Turner's largest painting.
The Prime Meridian was defined at the Royal Observatory Greenwich by the legendary Airy Transit Circle telescope.
See the perfectly formed Altazimuth Pavilion for free at the Royal Observatory Greenwich.
Imagine if you created a whole new type of clock, how would it work? Find Flamsteed's brilliant (but doomed) attempt to make a perfect astronomers' clock.
Who are the people whose work at the Royal Observatory was so important in our understanding of the universe?
This clock was used as The Sidereal Standard at the Royal Observatory, Greenwich for over 50 years until it was superseded in 1922.
In 1967, the world changed and time became a matter of atoms rather than stars.
Watch a fascinatingly intricate camera obscura showing Greenwich and the Thames in real time. Please note: the Camera Obscura is currently closed for essential maintenance, re-opening Easter 2017.
This telescope at the Royal Observatory Greenwich became a crucial reference point for astronomers, navigators and cartographers alike.
Ever seen a clock that changed the world? We can show you timepieces that are revolutionary - and exquisitely made.
Do you know which planet the owner of this eyepiece discovered?