St John the Baptist Church sits overlooking the New River. It has some Romanesque windows which date the church to the Norman times. There also many 15th Century features such as the striking tower and the piscina. The church is built of flint but it is thought that the nave may once have been thatched. In the chancel can be found a marble pavement showing scenes of Amwells' history. There is a large tomb outside belonging to the Mylne family. Robert Mylne was the engineer for the New River.
