Burg Freundsberg is a castle in Tyrol, Austria, that was constructed in the year of 1150 by the lords of Freundsberg. Burg Freundsberg is situated at an height of 675 m. Originally the castle consisted out of a single keep, which is still intact up to this date. The chapel next to it was built afterwards in the year 1117. In 1467 the castle was sold to Archduke Sigismund of Austria, who rebuilt the castle and called it Sigismundruh for the duration of his reign.