It looks like a completely nondescript clock, all the beauty works at noon-you can hear the clock striking, and the saints change in the side windows. It's a funny performance. The clock is striking loudly. It is not very easy to notice, they are in an arch, between two houses, from the courtyard, not the square, I passed by twice until I looked back and lifted my head)))
It's a beautiful place. For the most complete impression, I advise you to come at noon, then you will see the whole performance: the saints will change in a circle and you will see everyone. The place is very close to the center of Vienna. Good luck, travelers!