Herzogenburg Monastery (German: Stift Herzogenburg) is an Augustinian monastery located in Herzogenburg in Lower Austria. Founded in 1112 by Augustinian Canons, the monastery was refurbished in the Baroque style in 1714 by Jakob Prandtauer, Johann Bernhard Fischer von Erlach, and Josef Munggenast.

The monastery was founded in 1112 by Ulrich I, Bishop of Passau, at St. Georgen an der Traisen, now in Traismauer, at the confluence of the Traisen with the Danube. In 1244 because of frequent flooding it was moved up-river towards Herzogenburg. From 1714 the buildings were refurbished in the Baroque style by Jakob Prandtauer, Johann Bernhard Fischer von Erlach, and Josef Munggenast. The monastery was able to survive the dissolutions enforced by Emperor Joseph II in the late 18th century. Until 1783 the monastery was in the Diocese of Passau, afterwards in the Diocese of St. Pölten.

The monastery church was established in about 1014 by Emperor Henry II and is dedicated to Saint Stephen the Protomartyr (after the patron of Passau Cathedral). In 1112 bishop Ulrich I gave the benefice of Herzogenburg to his newly founded monastery at St. Georgen, which moved to Herzogenburg in 1244.

There are few remains of the Gothic church (the portal and the second storey of the tower). The architect of the present church building was Franz Munggenast (son of Josef Munggenast). The rebuilt church was dedicated on 2 October 1785 and was the last significant Baroque church built in Austria.

The emphasis of the collection is on late Gothic works such as panel paintings, sculptures and stained glass windows. The great banqueting hall, the treasury, and the monastic library, as well as the coin cabinet, underline the art-historical importance of the priory in Lower Austria. The Baroque picture gallery is also notable, and does not only contain religious works. A particular curiosity is a well-preserved Roman helmet, dating from about 150 A.D., which was found in a gravel pit in the vicinity.

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  Herzogenburg Monastery entrance
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  Herzogenburg Monastery
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  Herzogenburg Monastery
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  Herzogenburg Monastery inner courtyard
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  Cloister
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  Herzogenburg Monastery Church tower
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  Herzogenburg Monastery Church interior
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  Herzogenburg Monastery Church ceiling
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  Herzogenburg Monastery Church ceiling frescoes
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  Herzogenburg Monastery Church ceiling frescoes
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  Organ
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  Pulpit
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  Library
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  Herzogenburg Monastery, 1780
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  Provost Frigdian I. Knecht (1740–1775)
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  The bell „Pummerin“

• Egger, Gerhart, and Fasching, Herbert (1982). Stift Herzogenburg und seine Kunstschätze. Vienna: Verlag Niederösterreichisches Pressehaus. ISBN 3853266207.
• Katzler, Günter (2003). Die Zehente des Stiftes St. Georgen-Herzogenburg von seiner Gründung bis zur Mitte des 14. Jahrhunderts. Addendum to Studien zum Herzogenburger Zehentpachtregister (1299-1339). Thesis for Vienna University.
• Payrich, Wolfgang (1975). Stift Herzogenburg. Vienna: Verlag Niederösterreichisches Pressehaus. ISBN 3853263208.
• Penz, Helga (2004). Kloster - Archiv - Geschichte Addendum to Schriftlichkeit und Überlieferung im Augustiner-Chorherrenstift Herzogenburg in Niederösterreich 1300-1800 Dissertation for Vienna University.

Wikimedia Commons has media related to Stift Herzogenburg.

• Stift Herzogenburg official website (in German)

48°17′11″N 15°41′45″E / 48.286389°N 15.695833°E / 48.286389; 15.695833