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Royal Observatory Greenwich

Home > Attractions > Royal Observatory Greenwich

The Royal Observatory, Greenwich (ROG) is the home of Greenwich Mean Time and the Prime Meridian of the World, making it the official starting point for each new day, year and millennium.

It is also home to London's only planetarium, the Harrison timekeepers and the 28-inch telescope, the largest of its kind in the UK.

The new state-of-the-art planetarium is the centrepiece of the Royal Observatory's recent spectacular redevelopment project and is now the only planetarium in London.

The Museum is located in Greenwich, a short walk from the Cutty Sark DLR, local bus stops and Maze Hill and Greenwich stations. The Royal Observatory and Planetarium are in Greenwich Park.

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Opening Hours:

The Royal Observatory is open daily, 10.00–17.00.
Last admission 16.30
Last planetarium show 16.00

Between 3 May–31 August, the Meridian courtyard and toilets remain open until 20.00.

All three sites open late on the day of the London Marathon.

Last admission 30 minutes before closing. Admission free.

Contact Details:

Address:
Blackheath Avenue
Greenwich,
SE10 8XJ
Telephone: +44 (0)20 8858 4422
Website: http://www.nmm.ac.uk/places/royal-observatory/