Best places to visit in Biu

The Biuro Szyfrów ([ˈbʲurɔ ˈʂɨfruf], Polish for "Cipher Bureau") was the interwar Polish General Staff's Second Department's unit charged with SIGINT and both cryptography (the use of ciphers and codes) and cryptanalysis (the study of ciphers and codes, for the purpose of "breaking" them).
It's 04:47 right now , with clear sky and the temperature of 21.58°C (70.844°F) in Biu.