Mondsee is a town in the Vöcklabruck district in the Austrian state of Upper Austria located on the shore of the lake Mondsee. The town is home to the medieval Mondsee Abbey, whose cloister church was used for the site of the wedding in The Sound of Music. The town is also known for the SKGLB railway museum and for prehistoric pile-dwelling (or stilt house) settlements at Mondsee, which are part of UNESCO World Heritage Sites.