Dürnstein Castle is a historic fortress located in the Wachau Valley of Austria. It was built in the 12th century and is known for its stunning views of the Danube River. The castle played a significant role in the region's history, particularly during the reign of King Richard the Lionheart, who was imprisoned here in 1192. Today, the castle is a popular tourist destination, attracting visitors with its picturesque ruins and scenic surroundings. Hikers can reach the site via well-marked trails, and the area is also famous for its vineyards and charming villages, making it a perfect spot for exploring Austrian culture and history.