Discover the Royal Observatory in Greenwich — stand on the Prime Meridian, explore astronomy and timekeeping, and enjoy panoramic views of London.

Visit the Royal Observatory Greenwich

Ever wondered where time begins? At the Royal Observatory Greenwich, you can stand on the Prime Meridian Line, explore the wonders of space, and discover how Greenwich became the centre of world timekeeping.

Perched high on a hill in Greenwich Park, the Observatory combines breathtaking views of London with centuries of scientific discovery.

Where Time Begins

Founded in 1675 by King Charles II, the Royal Observatory was built to improve navigation and map the stars. Astronomer Royal John Flamsteed used its telescopes to chart the heavens — data that would later shape global time standards.

Today, it remains one of the most important scientific landmarks in the world, marking Longitude 0° 0′ 0″ — the point from which every place on Earth is measured.

Step on the Prime Meridian Line

One of the most famous features of the Observatory is the Prime Meridian Line, where the Eastern and Western Hemispheres meet.

Visitors can:

Stand with one foot in each hemisphere.

Learn how Greenwich Mean Time (GMT) set the world clock.

Take photos at the iconic stainless-steel Meridian sculpture.

Explore the Astronomy Galleries

Inside, you’ll find fascinating exhibits that bring science and space to life:

Great Equatorial Telescope – One of the largest refracting telescopes in the UK.

Time and Longitude Gallery – Discover the story of John Harrison and his revolutionary sea clocks.

Planetarium Shows – Journey through the solar system with stunning 360° visuals.

Space Exploration Zone – Learn about planets, galaxies, and our place in the universe.

Every display connects history with modern discovery, making it perfect for both science lovers and families.

The Planetarium Experience

The Peter Harrison Planetarium offers an immersive adventure through space. Expert astronomers guide you across galaxies, nebulae, and black holes using breathtaking visuals and real NASA imagery.

Shows change seasonally, so check the latest schedule before your visit on the Official Royal Museums Greenwich website

A View Worth the Climb

After exploring the exhibits, step outside for one of London’s best panoramic views. From the Observatory terrace, you can see the Old Royal Naval College, the River Thames, and Canary Wharf — a picture-perfect view of the city’s evolution from maritime hub to modern metropolis.

Family-Friendly Science

The Royal Observatory offers fun for visitors of all ages. Kids can enjoy interactive displays, hands-on experiments, and school holiday workshops. Families can take part in stargazing evenings and themed events throughout the year.

Regular highlights include:

Public telescope viewings.

Astronomy talks and night sky tours.

Special events celebrating space missions and discoveries.

Plan Your Visit

Entry: Paid admission; discounts available for combined museum tickets.

Location: Blackheath Ave, Greenwich, London SE10 8XJ.

Transport: DLR or train to Greenwich, or River Bus to Greenwich Pier.

Facilities: Café, shop, accessible routes, and guided tours.

Nearby attractions include Greenwich Market, the National Maritime Museum, and the Queen’s House — all part of the Royal Museums Greenwich collection.

Why Visit the Royal Observatory Greenwich?

The Royal Observatory Greenwich connects Earth to the stars — a place where science, history, and imagination meet. Whether you’re setting your watch to GMT, exploring the universe in the planetarium, or simply enjoying the London skyline, it’s an experience that inspires awe and curiosity.

Step across time and space at the Royal Observatory Greenwich — where every visit begins with wonder.