Foundation of the Church of St. George and St. James, which later becomes the monastery church.

The monastery is founded by the Counts of Althausen-Vehringen and is elevated to the status of an abbey that same year. Settlement by Benedictine monks.

Pope Paschall II confirms the foundation of the monastery.

The market village of Isny is officially granted city rights.

The church and monastery burn in the fire that sweeps Isny.

The monastery is sold to the Steward of the House of Waldburg.

After a period of economic prosperity, the monastery is almost extinguished during a plague epidemic.

After the city of Isny converts to Protestantism during the reformation, iconoclasts attack the monastery church.

The church and monastery are again destroyed by a city fire.

The monastery is rebuilt under the leadership of the abbot Dominikus.

Reconstruction of the Church of St. George and St. James.

The monastery enjoys its golden age at the beginning of the 18th century, under the wise leadership of the abbot Torelli, considered the second founder of the monastery.

The painter Hans Michael Holzhey from Kempten and the stucco plasterer Jerg Gigl from Wessenbrunn restore and redecorate the church’s interior.

The Church of St. George and St. James is today considered the rococo pearl of the western Allgäu.

The Monastery becomes imperial property, placing it under the direct authority of the Emperor of the Holy Roman Empire.

As a result of the secularisation introduced under Napoleonic rule, the monastery and the city become the property of the Counts of Quadt-Wykradt.

The County of Quadt becomes part of Württemberg. The monastery, however, remains in the possession of the Counts of Quadt-Wykradt.

The monastery is sold to the city of Stuttgart. Stuttgart first uses the monastery as a support hospital and later, until 1996, as the geriatric department of the Stuttgart public hospital.

The entire monastery complex is put up for sale. After the city of Isny refuses to purchase it, a local citizens’ initiative purchases the property.

The artist Friedrich Hechelmann, Josef Baschnegger and the brothers Hans and Rolf Müller found the "Friedrich Hechelmann and Isny Castle Artistic and Cultural Foundation". The Müller brothers donate the historically most significant part of the complex, the monastery, to the foundation, to which Friedrich Hechelmann also donates his life’s works.

Today the foundation’s rooms including the great art hall with the permanent exhibition of Friedrich Hechelmann’s works, the former carriage house with the city gallery, and the rooms for temporary exhibits. Currently, the historic courtyard and the abbot’s house are being renovated by Friedrich Hechelmann.

A special attraction is the refectory, the monks’ former dining hall. It is the most festive hall in the city and is used for cultural events and occasions, in accordance with the foundation’s mission. The castle grounds once again occupy a central place in life in Isny.