Greenwich is a district in the south-east part of London, currently a district of the Royal Borough of Greenwich. It is famous for the location of the Royal Greenwich Observatory from which the Greenwich Meridian is defined, where by definition the longitude is 0 ° 0 ‘0 “E / W, and which served as the basis for the definition of Greenwich Mean Time (GMT).
There are numerous tourist attractions, such as the Royal Observatory, where scientific instruments such as John Harrison chronometers, Queen’s House, Cutty Sark and Greenwich Park are on display. Near the Ship Cutty Sark, there is an underground tunnel linking Greenwich to the Isle of Dogs. Not far away, there is the Millennium Dome.
Greenwich Maritime is a historic maritime settlement located in the Greenwich district which was declared a World Heritage Site by UNESCO in 1997, because of the great concentration and quality of historic buildings and architectural interest.
Greenwich was the location of the Palace of Placentia, birthplace of three monarchs of England: Henry VIII, Mary I and Elizabeth I. The palace was demolished and replaced by Greenwich Hospital, the current Old Royal Naval College (The Old Royal Naval College) at the end of the 17th century.