On the space of irregular triangular forme on the slopes of the hill of St John, arrounded by city-walls, limited on north by the flow of short but violent river Skurda (300 meters long!) as well from west and south by the sea-shore and submarine spring Gurdic, on the alluvial bottom with the surface approximatively similar to the present, was performed the process of the formation of oldest urban core of Kotor, with its irregular plan of city streets, considerably different of typical scheme of rectangular street?s net gived by the Roman urban and building genius to the civilisation, by which the streets must to chop one other in a right angle (90 grades), forming rectangular or square »insulas« , the blocks with one-storied or poly-storied architecture.

Meanwhile, in Kotor is present the sense of irregularity and anusuality in the town-planing, which is never existing, but it is all made »ad hoc« , by the momentaneous necessities, although Kotor even in 14th century had the regles of the building in the urban core in its own city Statute.

In fact here there are two urban matrix into the town: the older and the younger, but they are not folded over, everyone has not the idea of regulatory or building line in the construction of streets and squares; so by that reason there is no one regular street of same breadth, the height of floors is not equal, the squares are completely assimetric, no one right angle or absolute vertical, as it is in normal planing and projecting. But nevertheless, on anyone open space transformed in a square there is one visual resultant of all looks ? very often one of numerous churches or palaces of the town.