St John the Baptist, Great Gaddesden
The Church St. John the Baptist was probably the site of a pre-Christian sanctuary. The church shows features of every period since the 12th century. Part of the chancel with Roman bricks dates back to the early 12th century.
The old church was extended by the south aisle in the 13th century and the north aisle in the 14th century, the west tower was built in the 15th century and the north chapel in the 18th.