The first documented mention of the castle was as Regensburg property in 1327. In 1355, Leutold II of Kuenring, the first known owner, died. The Kuenringers were a significant Austrian noble family, named after their seat Kühnring. Leutold's successors, Andre of Lichtenstein and Friedrich of Wallsee, renounced ownership for money, and Eberhard I of Kapellen acquired it in 1359. Subsequent owners included Ernst Preuhofer, the Liechtensteins, Chunrad the Steward, the Öders, Reinprecht V of Walsee, the Hausers, and Christof Zeller of Riedau, who were known as robber barons.
Georg von Wolframsdorf inherited it and around 1530, it passed to the Tannberg family, who sold it to Hans von Tschernembl in 1575. His son, Baron Georg Erasmus von Tschernembl, expanded it in 1608 with Antonio Canevale's design. As a Protestant leader, Georg left the country, and the castle was confiscated in 1620, bought by Count Leonhard Helfried von Meggau. During the Upper Austrian Peasants' War in 1626, the castle was briefly occupied. Later, it belonged to the Starhembergers, Kuefsteiners, and Thurnheim Counts, until 1899, when Baroness Therese von Schwitter owned it. In 1911, Count Alexander Hoyos acquired it, and it remains with his family. Archduchess Alicia, the last Grand Duchess of Tuscany, died there in 1935. After WWII, the Soviets renovated the Chinese Salon.
The castle, located north of Schwertberg where the Aist river exits the Josefstal valley, appears fortified with a design from 1608. Surrounded by the Aist on three sides, it has a Renaissance garden, one of the few of its kind in Austria, and a sundial on a round tower. The main building, partly Gothic and partly Renaissance, features arcades, a falcon kennel, and a chapel dedicated to Saint Mary. The Chinese Salon has wall paintings and a small Rococo library.
Saint-Émilion is a picturesque medieval village renowned for its well-preserved architecture and vineyards. The town and surrounding vineyards was made a UNESCO World Heritage Site in 1999, owing to its long, living history of wine-making, Romanesque churches and ruins stretching all along steep and narrow streets.
An oppidum was built on the hill overlooking the present-day city in Gaulish times, before the regions was annexed by Augustus in 27 BC. The Romans planted vineyards in what was to become Saint-Émilion as early as the 2nd century. In the 4th century, the Latin poet Ausonius lauded the fruit of the bountiful vine.
Because the region was located on the route of the Camino de Santiago, many monasteries and churches were built during the Middle Ages, and in 1199, while under Plantagenet rule, the town was granted full rights.