Castle Schönbühel, Wachau region, Austria. Schönbühel stands on the edge of a high, and uneven, cliff in the Austrian valley of Wachau. Known as the "Keeper of the Wachau," the castle has stood here for more than 1000 years.
Windsor Castle – Dating all the way back to Windsor Castle is a magnificent sight to behold. Not only is Windsor Castle one of the Queen’s official residences, but at over thirteen acres in size, it is also the world’s largest occupied castle.