London is the location of a place.
London contains four World Heritage Sites : the Tower of London ; Kew Gardens ; the site comprising the Palace of Westminster , Westminster Abbey , and St Margaret 's Church ; and the historic settlement of Greenwich -LRB- in which the Royal Observatory , Greenwich marks the Prime Meridian , 0  longitude , and GMT -RRB- .	Tower of London	Tower of London	Kew Gardens	Kew Gardens	Palace of Westminster	Palace of Westminster	Westminster Abbey	Westminster Abbey	Greenwich	Greenwich	Prime Meridian	Prime Meridian	longitude	longitude	GMT	Greenwich Mean Time
