This luxurious penthouse apartment is nestled in the heart of Mayfair, one of London's most prestigious neighborhoods, with a rare opportunity to own a piece of history. The apartment boasts a spacious living area with stunning views of Grosvenor Square and its lush greenery, perfect for relaxation and entertaining. With five bedrooms, four bathrooms, and a large south-facing roof terrace, this property offers a lifestyle of elegance and sophistication. The apartment is located in a secure building with a refurbished entrance hallway and a porter, and is just a short walk from world-famous restaurants, hotels, and luxury retailing. With a gross internal area of 4,434 sq ft and a roof terrace of 722 sq ft, this property offers enormous development potential and is a rare find in this sought-after location.