Lohja church is the third biggest medieval church in Finland. It dates back to the 15th century, probably between years 1470 and 1490. Impressive chalk paintings inside the church are made in the regime of bishop Arvid Kurki (1510-1522).
The Lohja parish was established in 1230s or 1240s and there have been several wooden churches before the present one. Also origins of the bell tower date back to the Middle Ages. The upper part was added in 1740.
The church site is named as the national built heritage by National Board of Antiques.
Krickenbeck moated castle is one of the oldest on the lower Rhine. Its history dates back to the year 1104, when the castle was first mentioned. It is unclear why the old castle, which was certainly inhabited by Count Reginar, was abandoned or destroyed. In the mid-13th century the castle was moved to the current location. At the end of the 14th century the new castle belonged to the Counts of Kleve.
Johann Friedrich II of Schesaberg converted the castle into a Baroque mansion between 1708-1721. On September 7, 1902, a fire destroyed the entire mansion. From 1903 to 1904, a three-winged castle was built in the Neo-Renaissance style. Today Krickenbeck is a conference center.