It was built and officially opened on 20 August 1896 to celebrate a thousand years of Hungarian settlement in the Pannonian plain.

The Millennium project included seven monuments in total all over the Hungarian part of Austro-Hungary, with Gardoš Tower being the southernmost; the others were at Budapest, Brassó (now Brașov in Romania), Dévény (Devín in Slovakia), Munkács (Mukachevo in Ukraine), Nyitra (Nitra in Slovakia), and Szeged.

[1] During the archaeological surveys in 2012-2013, two excellently preserved Roman graves with numerous artifacts and intact skeletons were discovered.

The lagums, or underground loess corridors of Zemun, their length and branching, are sources of numerous urban myths.

It lost all additional construction elements (doors, windows) and was cut from all communal networks (electricity, sewage, water).

The wife and husband gallerists Borka and Đorđe Čubrilo organized the initial cleaning and renovation of the tower.

The Čubrilos rented the space and began reconstruction, per directives of the Institute for Protection of Cultural Monuments.

[4] The original, 2012 lights were replaced with the new ones in December 2019 as part of the wider reconstruction project for the entire fortress.

[1] The stairs which connect the tower plateau and the Gardoška Street has been named the Staircase of Professor Dabižić in September 2021.

Originally, an eagle was placed at the top of the tower, while each podest (rest area) had two sculptures, a lion and a coat of arms.