First urban plans for the island were drafted in 1923, when the island was envisioned as an elite park area. The Belgrade's first general urban plan, adopted in 1924, included sports center on the island, and construction of the bridge to the mainland. In 1928, building company "Šumadija" proposed the construction of the cable car, which they called "air tram". The project was planned to connect Zemun to Kalemegdan on Belgrade Fortress, via Great War Island. The interval of the cabins was set at 2 minutes and the entire route was supposed to last 5 minutes. The project was never realized.