The Abbey of Lorsch is a former Imperial Abbey in Lorsch, Germany, about 10 km east of Worms, one of the most renowned monasteries of the Carolingian Empire. Even in its ruined state, its remains are among the most important pre-Romanesque–Carolingian style buildings in Germany. Its chronicle, entered in the Lorscher Codex compiled in the 1170s is a fundamental document for early medieval German history. Another famous document from the monastic library is the Codex Aureus of Lorsch. In 1991 the ruined abbey was listed as a UNESCO World Heritage Site.
The 9th-century gatehouse is a unique survival of the Carolingian era. It curiously combines some elements of the Roman triumphal arch (arch-shaped passageways, half-columns) with the vernacular Teutonic heritage (baseless triangles of the blind arcade, polychromatic masonry).