Royal Observatory Greenwich
Photo Gallery
About this place
Founded in 1675 by King Charles II to advance navigation and timekeeping at sea. Home of the Prime Meridian, where longitude is set at 0° and the world’s time zones are measured from. Historic instruments and telescopes chart the story of astronomy and Britain’s role in global navigation. Standing on the line itself is the highlight, placing you physically between east and west at a point that shapes how the world measures time.