Observing the stars

Lift closure

We're making improvements. From 7 to 28 May there will be no lift access to Flamsteed House or the Time and Longitude gallery. The Meridian Line and Gallery will still be accessible via wheelchair. Find out more about accessibility at Royal Museums Greenwich


Follow this trail to discover how we’ve used the stars to measure time, determine our location and explore fundamental questions about the universe.

Everyone can enjoy observing the stars with just the naked eye but over the past 300 years astronomers at Greenwich have used many instruments to look further into space.

Zenith sector telescope and mural circle

The Only Way Is Up!

Transit instrument telescope at the Royal Observatory Greenwich

This telescope at the Royal Observatory Greenwich became a crucial reference point for astronomers, navigators and cartographers alike.


Did you know if you looked through this you could see what the Universe is made of?

Herschel eyepiece

Do you know which planet the owner of this eyepiece discovered?

Image of the Dolphin dial at the Royal Observatory

How can a dolphin tell the time to the nearest minute?