The National Historical Museum (Historiska muséet) covers Swedish cultural history and art from the Stone Age to the 16th century. The museum is known for its so called "Gold Room" (Guldrummet) by the architect Leif Blomberg, where a large number of gold objects are kept as part of the exhibition. The museum hosts also the largest Viking exhibition, with more than 4,000 original artifacts.References:
The Château Comtal (Count’s Castle) is a medieval castle within the Cité of Carcassonne, the largest city in Europe with its city walls still intact. The Château Comtal has a strong claim to be called a 'Cathar Castle'. When the Catholic Crusader army arrived in 1209 they first attacked Raymond-Roger Trencavel's castrum at Bèziers and then moved on to his main stronghold at Carcassonne.
The castle with rectangular shape is separated from the city by a deep ditch and defended by two barbicans. There are six towers curtain walls.
The castle was restored in 1853 by the architect Eugène Viollet-le-Duc. It was added to the UNESCO list of World Heritage Sites in 1997.