26 March] 1887 by the Minister of Education and Church Affaires of Kingdom of Serbia Milan Kujundžić Aberdar on the initiative of professor Nedeljković.

On 1 July 1887 Nedeljković started his activity at the provisory astronomical and meteorological observatory which was located in the rented house of the Gajzler family at 66 Svetozara Markovića Street.

[4] Adopting the justified request of Prof. Nedeljković, a new Minister of Education, Dr Vladan Đorđević passed on 27 September 1888 the Regulation on the establishment of unified network of meteorological stations in the whole country.

[3] It was constructed according to the design of architect Dimitrije T. Leko and equipped with the modern small instruments for astronomical and meteorological observations.

Apart from its importance for astronomy and meteorology, the newly built Observatory, headed by Nedeljković, was a cradle of the seismic and geomagnetic researches in Serbia.

Thanks to Nedeljković's colleague and friend Miklós Konkoly, the founder of modern Hungarian astronomy and meteorology, the observatory was equipped with a seismograph.

[8][9] Citing Yugoslavia's need for such a facility, which countries such as the Soviet Union and the United Kingdom already possessed,[4] specifically naming the Pulkovo and Greenwich Observatories,[2] in 1929 Mišković succeeded in getting funds for the constructions of a new modern observatory, 6 km (3.7 mi) southeast from the city centre, occupying a 4.5 ha (11 acres) area at 253 m (830 ft) high hill on Veliki Vračar.

The Observatory was designed in modernist style, one of the first such buildings in Belgrade,[2][4] with elements of academic historicism, characteristic of the inter-war period.

Because of the observatory, at the time called zvezdarnica in Serbian, the entire area previously known as Veliki Vračar, became known as Zvezdara, both the modern neighborhood and the municipality of Belgrade.

[2] During World War II, section of the Observatory's administrative building was turned into the canteen for the German officers.

[2] As of 2017, the Large Refractor is still operational, so as the dome above it, but it can't be used for further scientific research due to the heavy light pollution in Belgrade.

[2] Construction of the new Astronomical Station of the Belgrade Observatory infrastructure began at the summit of Mount Vidojevica (elevation 1,155 metres (3,789 ft)) in southern Serbia.