Калемегдан
King Milan ordered the levelling of the terrain in the eastern sections of the fortress and planting of the greenery and trees, which in time developed into the Kalemegdan Park. He was inspired by the parks he saw in France. First phase of the forestation lasted until 1875 and included planting of the trees beneath the fortress' ramparts and in the Upper Town. The arranging of the main Sava alley, above the river, began in 1886. Most extensive works in the park were done from 1890. During March 1891, the pathways were cut through, and trees were planted; in 1903 the Small Staircase was built, based on the project of Jelisaveta Načić, the first woman architect in Serbia, while the Big Staircase, designed by architect Aleksandar Krstić, was built in 1928.