Municipality on the island Voorne-Putten, consisting of Abbenbroek, Biert, Geervliet, Heenvliet, Oudenhoorn, Simonshaven and Zuidland.

The reformed church of Abbenbroek is of special importance for its choir, which dates from the 13th century and is one of the oldest examples of Gothic architecture in the region. The tower dates from the first half of 15th century while the nave was built at the end of that century.

The reformed church of Zuidland is a big one-aisled church in Gothic style, although decorations on the tower remind of Romanesque. It dates from the 15th and 16th centuries and was destroyed by fire in 1918. After this it was restorted by H. van der Kloot Meijburg. During the restoration the 16th-century side-aisle was demolished.

The reformed church of Geervliet is a three-aisled pseudo-basilica in Gothic style from the 15th and 16th centuries. It was a chapter church and has a long choir. The tower was not completed.

The reformed church of Heenvliet is a small two-aisled building in Gothic style. Until 1824 the church was bigger; that year the nave was shortened on the west side and given its current front with the small tower.