Beguines from Altheim purchase the estate “Wazzershaf” and rename it “Heiligkreuztal”
Heiligkreuztal is granted the privilege of Papal protection
Membership in the Cistercian Order
The convent is placed under the supervision of the Father Abbot of Salem Eberhard of Rohrdorf
Consecration of the convent and the church by the Cistercian bishop Siboto of Seefeld
Consecration of the expanded building and the convent church
Major remodeling and expansion work in the style of the late Gothic period under the Abbesses Anna Gremlich and Veronika of Rietheim (1521-1551)
The convent belongs to the region of "Vorderösterreich"(Further Austria)
Attacks and looting of the convent by the Swedish
Erection of a new house for the Abbess
Construction of a pharmacy with rooms for the sick
Baroque building influences (church interior, Nuns’ Gallery, Abbess’ Building)
Secularization: abolishing of the convent and transference to Württemberg
The last Cistercians move out
Restoration of the outer walls of the convent church by the state of Baden-Württemberg. Partial purchase by the Stefanus Community