London Westminster Trafalgar Square (#0071)

Admirality Arch, just off Trafalgar Square. Completed in 1912 and originally used by the admirality and then as government offices. The arch provides access to the The Mall, the road that links Trafalgar Square and Buckingham Palace. In 2013 the building was leased (for 125 years) to a private developer for conversion into a hotel, shops, and residences. Next year they're planning to continue their efforts to best the American model and lease out Nelson's Column for a parachute ride (I'm kidding).