Hohenzollern Castle
Hohenzollern Castle (German: ) is the ancestral seat of the imperial House of Hohenzollern. The third of three hilltop castles on the site, it is located atop Mount Hohenzollern, above and south of Hechingen, on the edge of the Swabian Jura of central Baden-Württemberg, Germany.
Appenzell Castle
Appenzell Castle () is a castle in the Appenzell District of the canton of Appenzell Innerrhoden in Switzerland. It is one of a few 16th century stone buildings in Appenzell. It is part of the Swiss heritage site of national significance.