The Royal Observatory in Greenwich, England is a must-see for anyone interested in the history of astronomy and timekeeping. This iconic landmark has been a part of the Greenwich skyline since 1675 and has played an integral role in the development of timekeeping and navigation.
The Royal Observatory, Greenwich is an observatory situated on a hill in Greenwich Park in south east London, overlooking the River Thames to the north. It played a major role in the history of astronomy and navigation, and because the Prime Meridian passed through it, it gave its name to Greenwich Mean Time, the precursor to today's Coordinated Universal Time (UTC). The ROG has the IAU observatory code of 000, the first in the list. ROG, the National Maritime Museum, the Queen's House and the clipper ship Cutty Sark are collectively designated Royal Museums Greenwich.