Like a cubist work of art that someone forgot on a hill - and that's exactly what makes it so special: the Wotruba church consists of 152 roughly hewn concrete blocks and looks more like a monument to modernism than a classic place of worship. It was built according to the designs of the sculptor Fritz Wotruba and is considered an important example of brutalist architecture in Austria.
So if you are interested in architecture or simply looking for a nice and easily accessible hiking destination, this is the place for you.