The Nikola Tesla Technical Museum (Croatian: Tehnički muzej Nikola Tesla) is a technology museum located in Zagreb, Croatia, which collects and showcases scientific and technical appliances used in the country's history.

Professor Težak's vision is reflected in his concept of the Technical Museum, which, in addition to the basic content of a classic museum with a display of original exhibits from the field of technology and engineering, acts as an educational center for teaching a better understanding of natural sciences and technology.

[8] The museum maintains the oldest preserved steam engine in the area, dating from the mid-19th century, which is still operational.

In the permanent exhibition, 14 thematic units are presented with a number of sub-themes: Energy transformation, Means of transport, Mining-geology-oil with a mine model, Museums Land surveying-cadastre office, Demonstration cabinet Nikola Tesla and Firefighting on the ground floor and Astronautics with Planetarium, Agriculture, Apisarium (demonstration bee hives) and the Department and info center Renewable sources and energy efficiency on the floor of the large exhibition hall A.

The permanent exhibit dedicated to renewable sources and energy efficiency (2013), as well as the renewed exhibit on nuclear energy (2014) and the Info corner on radioactive waste (2016) are dedicated to current topics and issues of both science and technology as well as society as a whole.