Kafka attended the Old-New Synagogue, the oldest Synagogue in Europe – also famous for the 17th century Rabbi, Jehudah Loew, who is said to be the creator of the Golem, a clay-made artificial being who possessed supernatural powers and protected the city’s Jews. One of my favorite stories is “The Golem and the Jinni,” but its setting is Poland.
The Prague book on my to-read list now is “The Unbearable Lightness of Being” by Czech writer Milan Kundera, banned until the Velvet Revolution. Have you read it?
The No Charge Book Bunch 
I did read Lightness, ages ago. Can’t remember much about it, except liking it.
It’s on my list now, but so many others are waiting for me at the library first.