Saint George's Abbey, Längsee, Benedictine monastery in Sankt Georgen am Längsee, Austria

Saint George's Abbey is a Benedictine monastery on the shores of Lake Längsee in Carinthia, comprising a church, residential buildings, educational rooms, and seminar spaces. The structures were expanded and linked over centuries, with Roman foundations and Baroque details visible throughout.

The monastery was founded in the early 1000s by a countess whose daughter became the first abbess, arriving from another convent. The community expanded over generations and underwent major architectural transformation during the Baroque period.

The abbey's name comes from Saint George, on whose church site the nunnery was founded. The 1250 founder's plaque in the courtyard shows the heads of Countess Wichburg, Count Ottwin and their daughter Hiltipurg, the first abbess, with the hand of God. The Gothic church now serves as the local parish church.

The monastery functions today as an educational center with an active church, overnight accommodations, and meeting spaces for visitors. The Diocese of Gurk manages the site, so visitors can choose between guided tours and independent exploration.

The 1250 founder's plaque near the courtyard gate shows the heads of Countess Wichburg, Count Ottwin and Abbess Hiltipurg under the hand of God, with a Latin inscription naming Wichburg's body and her daughter as first abbess. It is among the abbey's most important surviving objects.