Visit the Royal Observatory Greenwich to stand on the historic Prime Meridian of the World, see the home of Greenwich Mean Time (GMT), and explore your place in the universe at London’s only planetarium.

Visit the Planetarium and Astronomy Centre at the Royal Observatory Greenwich and take an awe inspiring journey into space. Home to London's only planetarium where you can meet the astronomers and journey through the universe from the comfort of your seat, unravel the mysteries of the cosmos at the free interactive Weller Astronomy Galleries, see stunning images of space from all around the world at our annual Insight Astronomy Photography of the Year competition and get your hands on their 4.5 billion year-old meteorite.