Alois Svoboda, Prague. Cité millénaire aux cent tours, vue en quelques promenades — guide intime à travers ses beautés, monuments, particularités, et coins idylliques (Prague: Olympia, 1969; originally published in English by Sportovní a turistické nakladatelství, 1965)
The Central Library on Mariánské náměstí has become an important Prague tourist attraction. Since 1998, her foyer has been decorated with Idiom, a hollow column made of 8,000 books, the interior of which offers a touch of infinity thanks to the unusually placed opposing mirrors. Its author is Slovak artist Matej Kren.