It holds more than 160,000 original documents, over 2,000 books and journals, over 1,200 historical technical exhibits, over 1,500 photographs and photo plates of original, technical objects, instruments and apparatus, and over 1,000 plans and drawings.

The Nikola Tesla Archive was inscribed on UNESCO's Memory of the World Programme Register in 2003 due to its critical role regarding history of electrification of the world and future technological advancements in this area.

[2] The Nikola Tesla Museum is housed in a residential villa built in 1927 according to the designs of Dragiša Brašovan, a distinguished Serbian architect.

The building was used for various purposes until December 5, 1952, when the Nikola Tesla Museum was founded in accordance with the decision of the Government of the Federal People's Republic of Yugoslavia.

Certain items for the museum were shipped from New York City to Belgrade, Yugoslavia, on September 7, 1951, as a result of efforts by Sava Kosanović, Tesla's nephew and closest relative[3] and his attorney Philip Wittenberg.