organbuilder Karl Joseph Riepp (1710–75), is actually a double organ; it is one of the most treasured historic organs in Europe. It was the main instrument for 200 years, until 1957 when a third organ was added by G. F. Steinmeyer & Co., renovated and augmented in 2002 by Johannes Klais, making 100 stops available on five manuals (or keyboards). Gallery See also Carolingian architecture Carolingian art List of Carolingian monasteries References External links Monasteries in Bavaria Benedictine monasteries in Germany Carolingian architecture Christian monasteries established in the 8th century 1624 disestablishments in Europe States and territories established in 1710 Basilica churches in Germany Minor basilicas in Germany Imperial abbeys disestablished in 1802–03 States and territories disestablished in 1624 8th-century establishments in Germany Unterallgäu Religious buildings and structures completed in 764