The former Commandery, a medieval monastery of the Knights Hospitaller, is a Swiss heritage site of national significance.

During the Reformation in Zürich and the riots in the Herrschaft Grüningen against the feudal owners of the lands cultivated by the farmers and their families, Johannes Stumpf, the prior of the commandry at the time, supported its secularization and those of the neighbouring Rüti Abbey in spring 1525.

In 2000 the museum was redesigned, and a herbal garden (German: Epochen-Kräutergarten) was established and the exterior partially renewed in 2011.

They illustrate the foundation of the commonly named Ritterhaus building complex by the Toggenburg and Rapperswil families, and display scenes of the live of Saint John the Baptist.

The main building (Haupthaus), serving as the commander's house and administration complex, and the adjacent wing (Ritterhausflügel) were added between the 13th and 15th century; after the Reformation it was the seat of the local governor, a city council member from Zürich.