The predecessor of the current Slovenska Bistrica castle is first mentioned in 1265, when emperor Rudolf gave it and the adjoining town in fief to count (from 1286 duke of Carinthia) Meinhard of Gorizia. In 1313, it passed to the Habsburgs, who leased the castle and town to the noble house of Walsee. After 1368, the lordship was obtained by the counts of Celje; after their extinction in 1456 it reverted to the ducal lands. In 1587, the town and castle were bought by Hans Vetter; in 1717 the castle only was sold to the counts Attems, who retained until the end of World War II, when it was nationalized.
Rebuilt into a renaissance mansion in the 17th century, the foundations of the current building adjoin one of the defensive towers of its fortified predecessor.
The layout is trapezoidal, with a turret at each corner and an arcaded inner courtyard. The entire building is surrounded with a moat, now dry. The surrounding estate was planted with rare trees, now neglected, and a hornbeam tree row. The Attems decorated the interior in the early 18th century; the castle features a painted staircase, a chapel dedicated to the Virgin Mary, and a richly appointed great hall.
References:The Citadelle of Quebec is an active military installation and official residence of both the Canadian monarch and the Governor General of Canada. It is located atop Cap Diamant, adjoining the Plains of Abraham in Quebec City. The citadel is the oldest military building in Canada, and forms part of the fortifications of Quebec City, which is one of only two cities in North America still surrounded by fortifications, the other being Campeche, Mexico.
The first fortifications in Quebec were built by the Governor General of New France Louis de Buade, and completed just in time for the Battle of Quebec in 1690.
After the British conquest in the second half of the 18th century, the problem of Quebec City's defences grew more acute.