Lokenhaus Castle - a medieval castle, located in the southeastern part of Lockenhaus in Burgenland. The castle is located in a hilly area in the east of Austria, near the Hungarian border, B120 kilometers south of Vienna. At the foot of the castle is a picturesque lake.

The castle was built in the Romanesque and Gothic styles in about 1200, originally was a Hungarian name "Lek". Lokenhaus was built to protect the Roman province of Pannonia from the raids of the Mongols. Castle at different times owned the well-known personalities such as Henry II, king of Bohemia Ottokar II and Emperor Maximilian II. V1337 year Lokenhaus was destroyed by Charles I.

Gradually, the castle was rebuilt and became the property of Francis II, who married Elizabeth Bathory, who went down in history as "Bloody Countess", known for its terror and torture. From her hands, killing more than a hundred women.

The town and castle were actively prosper during the reign of Francis III (1622-1671), who was the Lord Lieutenant and served in the Royal Council. He married Julia Anne Esterhazy, daughter of Nikolaus Esterhazy.

During the Turkish war in 1683 the castle was heavily damaged, it was partly looted and destroyed.

During the First World War, and in subsequent years the castle remained unchanged. Reconstruction began only after the Second World War, in 1968, when Professor Paul Anton Keller and his wife Margaret bought the castle, which is in ruins. Repairs were estimated at 800 thousand euros. The family sold all their possessions, putting the castle 500 thousand euros. In just a few years before the completion of an extensive renovation Professor Keller died. However, his wife continued to work, completing the task and renamed the castle in "Professor Keller Foundation - Castle Lokenhaus" in honor of her husband.

From former times preserved ceremonial Knights' hall, a chapel, an underground crypt. The walls are decorated with frescoes of the 13th century. According to unconfirmed reports, in the castle there were Templars.

Currently, the castle periodically seminars, meetings and cultural events.