The people of Slovakia call it the radio diamond, but its official name is The Slovak Radio Building. Started in 1967, the architects (Štefan Svetko, Štefan Ďurkovič and Barnabáš Kissling), wanted to avoid the typical design of the tall buildings of the time. It contains a 500-seat concert hall.

By Juandev – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=133971706