While in Kirchberg-am-Wechsel we were given a tour of a disused church perched up on the mountainside. It has suffered a lot of misfortune over the years (if you can read German there is a wikipedia article here), it burnt down and was rebuilt twice, and is furnished with all kinds of leftovers from other churches, which makes it more interesting.
We also went to the baroque St Nicholas’ church in Prague. I’m not at all religious (and it seems neither are the Czechs), but I like visiting churches for the art and architecture. I really liked the faces of the statues inside, especially this bishop type who seems to be going “who? me?”.