Coombe Estate

Three Tudor conduit heads on this hill fed Hampton Court Palace by gravity through some three and a half miles of lead pipe, with a hundred-and-twenty-nine-foot fall — enough pressure for the palace's second floor — until the supply was cut in 1876. Coombe Conduit is both a scheduled monument and Grade II* listed, dated 1538–40: the attribution to Wolsey is traditional, and the research points to Henry VIII.