Sloane Square is a small hard-landscaped square on the boundaries of the central London districts of Knightsbridge, Belgravia and Chelsea, located southwest of Charing Cross, in the Royal Borough of Kensington and Chelsea. The area forms a boundary between the two largest aristocratic estates in London, the Grosvenor Estate and the Cadogan. The square is part of the Hans Town area designed in 1771 by Henry Holland Snr. and Henry Holland Jnr. Both the town and square were named after Sir Hans Sloane (1660–1753), whose heirs owned the land at the time.