In Late Antiquity Füssen was the home of a part of the Legio III Italica, which was stationed there to guard the important trade route over the Alps.

He and his Benedictine brother Theodor were two monks from the Abbey of Saint Gall and are considered to be its founders, in addition to the Monastery of Kempten.

[4] The canting coat of arms, depicting a triskeles symbol (alluding to the German Füsse "feet"), is based on a city seal used in the early 14th century.

During the 19th century, composer Richard Wagner used to come to Füssen by railway when he visited King Ludwig II of Bavaria.

The High Castle houses a branch gallery of the Bavarian State Collections of Paintings, which focuses on late Gothic and Renaissance works of art.

St Mang's Feast Day (6 September) is commemorated with a Holy Mass followed by a procession by torchlight through the old part of the city.