About 20 Grosvenor Square
20 Grosvenor Square is a 200,000 gross sq ft derelict site in the heart of Mayfair and St James’s. The current building was constructed in the 1930s and served for decades as the US Naval headquarters. In the Second World War, General Dwight Eisenhower used the building as his military headquarters.
Mayfair, named after the fortnight-long ‘May Fair’ event which took place in the area between 1686 and 1764, and St James’s, named after the Royal Palace, have long been synonymous with the world’s finest arts, fashion and lifestyle brands. The area is home to Savile Row, Sotheby’s and Christie’s, as well as some of Europe’s leading art galleries and jewellers.