The 'Old Church' of Diekirch with its two naves in Gothic style, dates back to 1467. In the Merovingian period (6th and 7th centuries), a pre-Romanesque church was built in the place of a Gallo-Roman sanctuary, certain parts of whose walls are still visible today. In the 11th century, this building was replaced by a Romanesque church, whose tour has been kept (12th century). Inside, the church has fine frescoes dating from the 16th and 17th centuries. In 1960, a cemetery, probably from the Merovingian period, was discovered underneath the church.
References:Vufflens castle was built in 1425 on the site of a previous medieval castle by Henri de Colombier. It is the most significant example of a small group of fortified Romandy castles from the middle ages, characterised above all by its brick construction. In 1530, it was set on fire by Bernese troops. In 1641 it was acquired by the de Senarclens family. The castle is currently privately owned and cannot be visited.
A pleasant 30 minute-walk through the vineyards between Vufflens-le-Château and Denens, offers a stunning view of this magnificent castle, the lake and the Mont-Blanc.