The architecture of Serbia has a long, rich and diverse history. Some of the major European style from Roman to Postmodern are demonstrated, including renowned examples of Raška, Serbo-Byzantine with its revival, Morava, Baroque, Classical and Modern architecture, with prime examples in Brutalism and Streamline Moderne. Centuries of turbulent history of Serbia caused a great regional diversity and favored vernacular architecture. This made for a heterogeneous and diverse architectural style, with architecture differing from town to town. While this diversity may still be witnessed in small towns, the devastation of architectural heritage in the larger cities during World War II, and subsequent socialist influence on architecture resulted in specific mix of architectural styles. Prehistoric period Numerous civilizations and cultures resided on the territory of Serbia prior to the arrival of the Romans. Best known ones were Starčevo, Iron Gates and Vinča cultures, dating between 7000 BCE to 4500 BCE. The oldest human remains were found in Sićevo believed to be up to 525,000–397,000 years old. Prehistoric structures are simple in design, using local materials such as wood, mud, straw, rocks and earth for building, with simple geometric patters such as pyramidal huts and round mounts. Ancient period The northernmost Ancient Macedonian town was Kale-Krševica, which still today have the foundations of the Ancient Greek 5th-century BC town. The Scordisci built the stone fortress of Singidunum, the Kalemegdan at Belgrade in the 3rd century BC, It has since been built on by Romans, Serbs, Turks, Austrians and show an example of continuing 2,300-year-old architecture, serving as one of the best landmarks in Belgrade. The Romans left many traces of their six centuries of rule in the Serbian lands, including several fortifications and complexes such as the 3rd century AD Imperial palace of Galerius at Gamzigrad (Felix Romuliana) that was built at his birthplace after the victory against the Persians, the Mediana site in Niš (Naissus) from the 4th century and the Dardania capital, the ruins of the Moesia Superior capital Viminacium, former Roman capital and birthplace of several Roman Emperors Sirmium, and Byzantine city Justiniana Prima built by Justinian I, which was the seat of the Archbishopric of Justiniana Prima, Justiniana Secunda, Remesiana, Gratiana etc. Roman, and later Byzantine architecture would inspire architecture of medieval Serbia, especially fortifications and religious buildings. Medieval period Medieval period between the 8th and 17th century showcased the most turbulent and wide array of architectural styles