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The stunning collection of bars and restaurants at what was once the Christian Dior headquarters in Mayfair remains a draw for fashionistas, the curious and the downright loaded. The Gallery restaurant downstairs buzzes informally in shimmering white and features video art projections. The Glade on the ground floor is the place for affordable lunch (two/three courses for around 20) and the stunning Parlour patisserie to the right of the main entrance is great for tea and cakes. The ultimate attraction is the more formal Lecture Room & Library upstairs, where the high prices and haute cuisine in sumptuous surroundings from three-starred Michelin chef Pierre Gagnaire attract an exclusive crowd. Upstairs you'll also find the East Bar, with a dozen of London's most unusual individual loos.