With the arrival of Augustinian monks in this region, the monastery was built in the 13th century. After the Reformation, the building lost its sacral function in the 16th century and fell into ruin. Its remains can be visited today.
The ruin represents one of the most beautiful monuments of medieval monastic architecture in Western Pomerania. It owes its origin to the Augustinian order, whose monks settled in this area in the middle of the 13th century. They began the reclamation of the hitherto barren wetlands and regulated the Gunica River. They built a mill, raised sheep and pigs, grew hops and maintained several hostels. At the end of the 13th century they also owned its wooden church, which was later expanded by them. The actual monastery was built in the 14th century and consisted of two, two-story wings and a church, creating a courtyard open to the west. The original Gothic structure with the outer walls of the south and east wings up to the second floor and a cellar vault have been preserved until today.
With the Reformation in the 16th century, the Jasenitz monastery was secularized. From the end of the 17th century it visibly decayed. In the middle of the 20th century the upper floors were demolished. Today, the grounds of the ruin and the church are maintained and structurally secured. The interior of the ruin is overgrown with bushes and other wild plants, but the property and the ruin can be visited and walked around. The preserved window arches and arcades impressively testify to the style in which the monastery was once built. One part can be seen from the outside, the other part is accessible from the churchyard. The picturesque scenery is often used as a photo backdrop for various events. For several years now, an Augustinian market has been held around this ensemble at the end of the summer holiday season. This medieval market is intended to keep alive the memory of the life of that time. Not long ago, on Easter Saturday, a staging of the Entombment of Jesus was organized. The church is easy to find from the road, as it is located on a small hill, while the ruins of the monastery itself are located a little lower in its shadow.