Infinitely from 8 thousand of books. Or Idiom. It is also called the Column of Knowledge – a column of 8,000 books by the artist Matěj Krén. It has been standing in the entrance hall of the main building of the Municipal Library on Mariánské náměstí for twenty years and is rightly attracting a lot of attention. Lean into it – and you’ll know right away what infinity is.