Rich in Maritime history, Greenwich, in South East London, was home to the Royal Naval College from 1873 until its closure in 1998. Now known as the Old Royal Naval College, a designated World Heritage Site. Greenwich Park offers fantastic views of the College by the River Thames and the skyscrapers of Canary Wharf. Greenwich is also famous for being the site of the Greenwich Meridian, zero degrees longitude, marked at the Royal Observatory and furthermore Greenwich Mean Time, adopted as a global time standard and used up until 1972.