The facade, which faces Storgade, Sorø's main street, stands in blank red brick with white sandstone bands just below the windows, on a dressed ochre-coloured plinth.

The rear side of the building as well as a low lateral wing which defines the northern margin of a courtyard space, stand in yellow-dressed masonry.

The kolumba shingles were developed in collaboration with Petersen Tegl which also manufactured the bricks used for the Royal Danish Playhouse, one of Lundgaard & Tranberg's earlier projects.

In 1997, the museum was bequeathed a sizeable collection of Russian art by the estate of former barrister Hermod Lannung.

[5] The collection of icons comprises 190 pieces, dating from between 1500 and 1900, and is the result of three large donations from Per Schrøder, Lorentz Jørgensen and Hermod Lannung.