This baroque patrician house was built in 1675 by Baron Paul von Buol zu Strassberg und Rietberg (1634-1697), who belonged to the leadership of the Three Leagues. Broad flights of stairs open up the interior of the building. They connect the basement, the ground floor with its vehicle passage, two grand storeys and the attic floor with its servants' quarters.

The exhibition includes archaeological, cultural historic and folkloric objects from all over the canton of Grisons, from prehistory and early history through the Middle Ages, the Renaissance and the Baroque to the 19th and early 20th century.