Selchausdal, formerly Gundetved, is a manor house and estate located on the east side of Tissø, Kalundborg Municipality, some 92 kilometres west of Copenhagen, Denmark.

The three-winged Renaissance Revival style main building is from 1857 and was designed by Johan Daniel Herholdt.

This led to an impeachment for breach of the Sixth Commandment in which he was sentenced to paying a fine to a hospital and secretly make his confessions of penitents.

In 1723, Michelbecher's widow sold the estate at a very low price to Jacob Benzon.

In 1729, Benzon sold the estate to Frederik Adeler for just over twice the price that he had paid six years earlier.

In 1782, Gundetved was acquired by Christian Andreas Selchau, a son of the owner of Benzonslund at Ringsted, who renamed the estate Selchausdal in 1799.

On his death in 1816, Selchausdal was owned by his widow until their son Jens Christian Selchau took over in 1821.

Christian Andreas Selchau commissioned Johan Daniel Herholdt to design a new main building which was completed in 1857.