[1][2] He also initiated and financed the construction of four major edifices in Knez Mihailova Street, the third of which were built immediately after the First Balkan War, such as the Grand Passage, designed by Nikola Nestorović.

[4] Spasić trained as an artisan and merchant before opening a leather workshop and store in 1865 alongside his brother.

[4] The shop manufactured and sold opanci (Opanak), a Balkan peasant footwear similar to the moccasin which was widely accepted as part of the Serbian national costume and was worn in the 19th century both in the city and the village.

[4] For the architectural design of his buildings, Spasić developed a reputation for selecting the most accomplished Serbian architects.

[4] Only a few days before his death on the island of Corfu, where he arrived as a war refugee, Spasić revealed in a letter, his hope that he would return one day to liberated Belgrade, accompanied by Viennese architect Konstantin Jovanović, with whom he planned to engage to design new remarkable edifices.