charles sennott, global post, thanks. >> thank you. >> ann curry, nbc. as always, tremendous. thank you. >> a pleasure. >> and join us many of this region's hill towns date back to etruscan times, well before ancient rome. others date to the fall of rome. when rome fell, europe was engulfed in chaos. people naturally grabbed for the high ground to escape the marauding barbarians that characterized those dark ages. over time, these towns were fortified and eventually functioned as independent city-states. in their glory days, they proudly charted their own course, generally free from the dictates of popes or emperors. then, the bubonic plague swept through tuscany in 1348. that, combined with the increasing dominance by the regional bully, florence, turned many bustling cities into docile backwaters. ironically, the bad news of the 14th century mothballed these towns, leaving them with a unique charm and a tourism-based affluence today. siena maintains much of its medieval character. its sprawling main square and towering city hall recall the days when it rivaled even florence.