and Church Sveta Petka are located on Kalemegdan fortress, near observatory (easy to miss, ask for directions). Ruaica is first mentioned at 15th century, and destroyed in early 18th century. After that it is rebuild in the present location, and it is the oldest church in Belgrade. It is again destroyed in World War I by the Central Powers, and then renewed in 1925. At that time the church got bronze soldiers guards in front of it and the unusual chandeliers made out of bullet shells, swords and bayonets.