Vaduz Castle (German Schloss Vaduz) is the palace and official residence of the Prince of Liechtenstein. The castle gave its name to the town of Vaduz, the capital of Liechtenstein, which it overlooks from an adjacent hilltop.
The earliest mention of the castle can be found in the deed of the Count Rudolf von Werdenberg-Sargans for a sale to Ulrich von Matsch. The then owners - presumably also the builders - were the Counts of Werdenberg-Sargans. The Bergfried (12th century) and parts of the east-side are the oldest. The tower stands upon a piece of ground of about 12 x 13 m and has a wall density on the ground floor of up to 4 metres. The original entrance lay at the Hofzijde at an 11 metre height. The chapel St. Anna was presumably built in the Middle Ages as well. The main altar is late-gothic. In the Schwaben War of 1499, the castle was burned by the honorbound of Switzerland. The west-side was expanded on by Count Kaspar van Hohenems (1613-1640).

The Liechtenstein family acquired Vaduz Castle in 1712 when it purchased the countship of Vaduz. At this time, Charles VI, Holy Roman Emperor, combined the countship with the Lordship of Schellenberg, purchased by the Liechtensteins in 1699, to form the Principality of Liechtenstein.[1]
Piano Improv by Dave Hart, American Pianist/Composer