Despot Stefan Tower

The Despot Stefan Tower (Serbian: Деспотова кула; Despotova kula) or Dizdar Tower (Диздарева кула; Dizdareva kula) is a structure in Belgrade, Serbia, built ca. 1405, a couple of years after the city became the capital of Serbian Despotate under Despot Stefan Lazarević.

Despot Stefan Tower
Kalemegdan, Belgrade Serbia
Despot Stefan Tower in Upper City of Kalemegdan Fortress
Despot Stefan Tower Location within Belgrade
Coordinates	44°49′31″N 20°27′4″E
Site information
Open to the public	Yes
Site history
Built	1405
Built by	Stefan Lazarević
In use	Serbian Despotate
Materials	Stone

In May 1963, representatives of the city administration, Institute for the protection of the cultural monuments and members of the astronomical societies, agreed to adapt the Dizdar Tower into an observatory. Works began in May, instruments were to be installed by autumn, and the observatory was to become operational in October 1963.[1]

Today, the tower is the seat of the Astronomical Society Ruđer Bošković and houses its Popular Observatory. The Observatory has two instruments: refractor Zeiss (110/2200mm) and reflector Tall 200 K (200/2200mm), both of which are used mainly for observations at night. Four panoramic telescopes are also mounted on the tower, which can be used to observe the panorama of Belgrade.[2]