A World Heritage Site (WHS) is a monument, building, area or landscape that is recognised by the United Nations Educational, Scientific and Cultural Organization (UNESCO) as being 'of outstanding universal value'.
There are more than 500 such sites in over 100 countries.
the need for a site's long-term care and enhancement.
This is supported by a Management Plan to ensure that future generations will continue to benefit from it. Only national governments can apply for WHS status and there is a strict assessment process before it is granted.
'Maritime Greenwich' became the United Kingdom's fifteenth World Heritage Site in December 1997. Others include Stonehenge, Hadrian's Wall, Durham and Canterbury Cathedrals, the City of Bath, and Edinburgh Old and New Towns. In London, the Tower of London and Westminster are also World Heritage Sites.
'Maritime Greenwich' consists of a unique historical and architectural landscape in and around London's oldest Royal Park.
It includes:
the Old Royal Naval College
the National Maritime Museum
the 17th-century Queen's House
the Royal Observatory, Greenwich
Greenwich town centre.
Alongside this is the importance of historic Greenwich – its major buildings and their uses - to maritime history and science.
Navigation and the Royal Navy were central to the Britain's development as a world-wide sea-trading and imperial power between the 18th and mid-20th centuries. 'Maritime Greenwich' is mostly concerned with these subjects.
the 17th-century Queen's House - the first purely classical building in England, now part of the National Maritime Museum
the Old Royal Naval College - designed by Sir Christopher Wren, which formerly housed invalid sailors from Britain's naval wars as the Royal Hospital for Seamen (1705–1869), before becoming the Navy's advanced training college from 1873 to 1998
the Royal Observatory - Britain's first purpose-built scientific establishment and 'home' of Longitude 0° and Greenwich Mean Time. The Observatory played a key role in the improvement of navigation, world time-keeping and astronomy from 1676 until the Second World War. It is now part of the National Maritime Museum
the National Maritime Museum - occupying fine 19th-century buildings attached to the Queen's House. This is the world's leading museum in its field with superb collections relating to all aspects of Britain at sea, and to many other aspects of European seafaring
the Cutty Sark (1869) - preserved at Greenwich, is the world's only surviving tea-clipper. It commemorates the trading side of the Age of Sail
Greenwich town centre - this features the fine 18th-century church of St Alfege and also an exceptional number of shops and houses dating from the late 17th-century onwards. It also includes an almost complete late-Georgian shopping and market area.