This tiny sliver of a shop in Mayfair—in fact, the entire space is made up of a staircase—is packed with inspiration that comes in the form of owner Silka Ritten-Thomas’ unusual floral arrangements and the art shows she curates alongside them. Her flowers—some real, some paper—are often asymmetrical, bright, and sculptural, and are really more of an art form than your regular bouquet, so call way in advance if you’re looking for a special delivery.