Royal Observatory

Visit the Royal Observatory in Greenwich, London. Home of Greenwich Mean Time (GMT), the Prime Meridian of the world and London’s Planetarium.

Top reasons to visit

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Image of Prime Meridian Greenwich

Stand on the Meridian Line

Stand astride the historic Prime Meridian where east meets west, and take your place at the centre of the world!

Meridian Line experience 

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Image of the home of time

Discover the home of GMT

Uncover the history of Greenwich Mean Time (GMT) and see clocks and timepieces that have literally changed the world.

Tell me more

3
Image of planetarium experiences

Explore space

Take an awe inspiring journey into space with our astronomers and unravel the mysteries of the cosmos at London's planetarium.

Planetarium shows

Tickets and opening times

Tickets & prices
Adult £9 | Child £5.85
Open daily from 10am - 5pm
Including Bank Holidays
Getting here
Blackheath Avenue, Greenwich, London SE10 8XJ

This month's highlights

Explore the fascinating mysteries of time and space

Did you know

Dating from 1675, Charles II’s Octagon Room is one of the few Christopher Wren-designed interiors that you can see in London today.

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Find your way

Royal Observatory Greenwich is a quick and easy journey from central London, by DLR, rail or boat

What our visitors say

'From the beginning of time to the movement of the stars.... from the navigation of the globe to the lives of the men and women that made it all possible.... it's here..... AND YOU CAN STRADDLE THE MERIDIAN.'
TeaWithQ, Trip Advisor
'Went to see the “Astronomy Photographer of the Year” exhibition today, absolutely amazing'
@parestailor, Twitter