We were in the morning, entrance is paid. Therefore, it is better to come to 18. But you can watch a lot of these without paying an entrance fee. I liked the appearance more.
The Karlskirche is a luxurious, domed, Baroque and most memorable church in Vienna. The height of the Karlskirche is 72 meters. It is the tallest Baroque church in Vienna and the most significant architectural structure of the Baroque era north of the Alps.