BELGRADE, Serbia (AP) — It may be out of place on a busy downtown street and it may be a bit run down, but this small mansion in central Belgrade is thriving. Its walls crumbling and shutters closed, a 19th century house filled with period furniture is keeping a piece of the Serbian capital’s history intact even as everything around it has transformed. The house has endured on one of the city's main thoroughfares, turning into a theater named Takovska17. Built in 1894 by a prominent the at...