Prestfoss is the administrative center of the Sigdal municipality in Buskerud county, Norway.
The population of Pressfoss as of 2005 was 465. Prestfoss is located 1.5 hours northwest of Oslo (100 km). Prestfoss is the site of the Folk Music Center of Buskerud (Norwegian: Folkemusikksenteret i Buskerud), of the Sigdal and Eggedal Museum (Norwegian: Sigdal og Eggedal Museum) and of Lauvlia, the former home of artist Theodor Kittelsen.
The Folk Music Center of Buskerud is an open-air cultural heritage museum offering a good image of the building style and traditions of the district. The Folk Music Center of Buskerud is principally responsible for collecting, storing and promoting local folk music and dance. The Archives of the Folk Music Center contains historical materials regarding local folk music.
Sigdal and Eggedal Museum is a regional museum for Krødsherad, Modum and Sigdal. This museum dedicated to the region's culture and history is arranged particularly authentically. It comprises thirteen buildings, mainly farmhouses, grouped together on a carefully chosen site to show rural life in olden times. During summer visitors of all ages can enjoy activities relating to traditional crafts and shows. A building opened in 1978 houses a fine collection of regional costumes from the 1800s to the present day. Sigdal and Eggedal Museum is situated in the grounds of the former Sigdal Nickel Works which was in operation from 1874 until 1879.