Sinđelićeva street in Gardoš
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Gardoš (Serbian Cyrillic: Гардош; Hungarian: Gárdos) is an urban neighborhood of Belgrade, the capital of Serbia. It is located in Belgrade's municipality of Zemun. Located on the slopes of the hill of the same name, with its tower and preserved old architecture, Gardoš is the major historical landmark of Zemun.
Gardoš is one of three hills on which the historical core of Zemun was built (other two are Ćukovac and Kalvarija). Gardoš rises on the right bank of the Danube and is the natural lookout to the area across the river (Crvenka section of the Pančevački Rit in the municipality of Palilula). Gardoš borders the neighborhoods of Gornji Grad on the northwest, Ćukovac and Muhar on the south and Donji Grad on the southeast.
Gardoš, Ćukovac and Kalvarija hills are not natural features. Zemun loess plateau is the former southern shelf of the ancient, now dried, Pannonian Sea. Modern area of Zemun's Donji Grad was regularly flooded by the Danube and the water would carve canals through the loess. Citizens would then build pathways along those canals and so created the passages, carving the hills out of the plateau. After massive 1876 floods, local authorities began the construction of the stony levee along the Danube's bank. Levee, a kilometer long, was finished in 1889. Today it appears that Zemun is built on several hills, with passages between them turned into modern streets, but the hills are actually manmade. Due to its position above the river, it has been an excellent military lookout through history. The hilly appearance is enhanced by the centuries of fortification of the Gardoš, mostly using stone from Belgrade's side of the Sava river, which made Gardoš even higher.
Loess terrain of Gardoš, Kalvarija, Ćukovac is one of the most active landslide areas in Belgrade. Being cut into for centuries, the loess in some sections have cliffs vertical up to 90%. Additionally, this area is known for lagums, a vast network of underground corridors, which were used for supply and eventual hiding and evacuation. In the previous centuries, settlers left many vertical shafts which ventilated the lagums, drying the loess and keeping it compact. As the city of Zemun grew and got urbanized, the shafts in time were covered or filled with garbage. That way, the corridors retained the moist and began to collapse. Situation is critical after almost every downpour.
For the most part, the neighborhood preserved its old looks, with narrow, still mostly cobblestoned streets unsuitable for modern vehicles, and individual residential houses. As a curiosity, almost half of the neighborhood is occupied by Zemun's largest graveyard. As a popular promenade become somewhat of a fashionable place since the 1990s, several modern restaurants were built near the top of the hill with the view on the Danube.
The major attraction in the neighborhood is the Kula Sibinjanin Janka (The tower of Janos Hunyadi) or the Millennium tower, also known as the Tower on the hill or simply the Gardoš tower. It was built and officially opened on August 20, 1896 to celebrate a thousand years of Hungarian settlement in the Pannonian plain. It was part of the massive construction effort which included buildings in Budapest as well as four millennium towers on four directions of the world. Being the southernmost city in then Hungary within the Austria-Hungary, the tower was built on the ruins of the medieval fortress on Gardoš hill which barely survived today (only angular towers and parts of the defending wall). The tower was built as a combination of various styles, mostly influenced by the Roman elements. Being a natural lookout, it was used by Zemun's firemen for decades. Today, the tower is better known after the Janos Hunyadi, who actually died in the old fortress four and a half centuries before the tower was built.
There is a theater called "Teatar Gardoš" but it is located south of the neighborhood, on the Masaryk square in Donji Grad. The main cultural event is Leto na Gardošu (Summer in Gardoš), a series of mostly otudoors theatrical performances, held in July and August each year. 
In March 2018 it was announced that the top plateau of the hill and the area surrounding the tower will be revitalized. Without public architectural design competition, the job was directly entrusted to architect Ksenija Bulatović by Milutin Folić, Belgrade's city architect, and Dejan Matić, president of Zemun municipality. The reconstructed area will cover 2,000 m2 (22,000 sq ft). The existing stairways which connect the tower with the city below will be expanded, while two panoramic elevators will be built, one to the Muhar (Square of Branko Radičević) and other to the Zemunski Kej, and the projected international pier on the Danube, which will be constructed in the future. Existing open air facilities, like the restaurant and an amphitheater, will be covered. The remaining open area is envisioned as a "summer stage, artistic colony, fitness zone".
City administration itself devised a reconstruction plan for the fortress. All four corner towers of the former fort will be refurbished. Three existing ones will be just revitalized, while the fourth, which is demolished, will be reconstructed. Existing towers protrude for 2 m (6 ft 7 in) above the remains of the fortress, while the fourth will be half of that height, so that the panoramic view on Zemun will be preserved.
- Miloje Jovanović Miki (2 December 2010). "Brdo Gardoš nije brdo" (in Serbian). Politika. Archived from the original on 31 May 2016.
- Nikola Belić (8 November 2011), "Klizišta nisu samo hir prirode", Politika (in Serbian)
- Nikola Belić (22 February 2012), "Otapanje pokreće i klizišta", Politika (in Serbian)
- "Letnja zabava na Gardošu", Politika (in Serbian), p. 48, 2008-07-08
- Daliborka Mučibabić (18 March 2019). "Gardoški vidikovac sidro za umetnike" [Gardoš scenic viewpoint as an anchor for artists]. Politika (in Serbian).