Bulevar kralja Aleksandra (Булевар краља Александра, "King Alexander Boulevard") is the longest street entirely within the urban limits of Serbian capital Belgrade, with length of 7.5 kilometers. Known for decades after World War II as Bulevar Revolucije (Булевар Револуције, "Boulevard of the Revolution"), it is so distinct in the Belgraders' hearts and minds that they simply refer to it as the Bulevar (Булевар, "Boulevard), although there are 20 boulevards in Belgrade. Due to its length, Bulevar stretches through four out of eight urban municipalities in the old section Belgrade: Stari Grad, Palilula, Vračar and Zvezdara, in which the main part of the Bulevar is located. Starting at the Square of Nikola Pašić, it goes for the most part in a south-east direction, curving only near the end, in the neighborhood of Mali Mokri Lug, after which the Bulevar extends into the road of Smederevski put, which connects Belgrade with the city of Smederevo. Location of the boulevard was always important for the traffic. In Roman period, it was a starting section of the 924 kilometers long Via Militaris, which connected Singidunum, predecessor of Belgrade, and Constantinople, and in more local terms, Singidunum with fortresses and settlements along the Danube border of the Roman Empire, like Viminacium. Built in the 1st century AD, the road was six meters wide, with rows of shops, forges and arsenals, while Romans were buried along the road in stone sarcophagi. Archeological remnants of the Roman road can still be seen below the “Depo”, former depot of the city’s public transportation company. Majority of boulevard's course is part of the “Ancient Singidunum” archeological locality. Singidunum's castrum occupied part of today's Belgrade Fortress, but the civilian zone spread from the Kralja Petra Street, over the both Sava and Danube slopes, till Kosančićev Venac, extending in a series of necropolises from Republic Square, along the Bulevar kralja Aleksandra all the way to the Mali Mokri Lug.