The building of the Mechanical School in Bydgoszcz is a historic public edifice, serving educational purposes, located at 37 Świętej Trójcy Street, in downtown. It is registered on the Kuyavian-Pomeranian Voivodeship Heritage List.

Bydgoszcz displays an abundant variety of architectures, with styles from neo-gothic, neo-baroque and neoclassicism, to Art Nouveau and modernism; hence its nickname of Little Berlin at the start of the 20th century. The notable granaries on Mill Island and along Brda river also recall a recognized timber-framed characteristics of the city in Poland.