'''Technical Museum''' (18 Savska Street) was founded in 1954 and it maintains the oldest preserved machine in the area, dating from 1830, which is still operational. The museum exhibits numerous historic aircraft, cars, machinery and equipment. There are some distinct sections in the museum: the Planetarium, the Apisarium, the Mine (model of mines for coal, iron and non-ferrous metals, about  long), and the Nikola Tesla study.