"Hohes Schloss" (High Castle), the former summer residence of the prince bishops of Augsburg.
Below the Castle is the Baroque complex of the former Benedictine monastery of St. Mang, whose history goes back to the 9th century.
Füssen has Saint Mang (Magnus of Füssen) as its patron saint. His original burial place was in the small chapel he built. His bones were transferred to the crypt of the church built in 850.(Source: Wikipedia)