Darbu is a village located on the Sørland Line Railway, about midway between Kongsberg and Hokksund. Here is Fiskum Church and the most important heritage is Fiskum Old Church (Fiskum Gamle Kirke).
Fiskum Church at Darbu is built in 1866 and was burned down in januar 1902. You can find the Fiskum Church on Fv 73.
Fiskum old Church is a medieval, Romanesque church dating from approximately 1200 A.D. The church was dedicated to Saint Olav. Fiskum Old Church was constructed in a rectangular shape and built of stone.