The Church of Saint Sava is a Serbian Orthodox church, with its first stone laid in 1935. It is the largest Orthodox church in Serbia, one of the largest Eastern Orthodox churches and it ranks among the largest churches in the world. It is the most recognizable building in Belgrade and a landmark, as its dominating dome resembles that of Hagia Sophia, after which it was modeled.

The Nikola Tesla Museum 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 picture with the gold ball is actually an urn that holds the ashes of Tesla.