What are some amazing facts about the Vijaynagar empire and its capital? img:Sri krishna devaraya Vijayanagar (circa 1446-1520 AD) was the arguably one of the greatest cities of the Medieval world founded by two brothers Harihar and Bukka of Sangam dynasty near Tungabhadra river of Andhra pradesh. 2. It had seven lines of fortifications around the whole city which is truly incredible feat of engineering. Even the massive Jerusalem had only three lines which Romans found intimidating and took 47 days to defeat. This vast fortification was build to defeat the age old tactic of cutting supply lines to the city thereby starving the people inside thus forcing the opponent to surrender. The farmlands were inside these fortifications which made it impossible to conquer. Mortar was not used anywhere to build the walls but the chiseled stones were neatly wedged to fit each other without compromising the strength. ...