A symbol of human ingenuity, Segovia's aqueduct has stood sentinel over the city for millennia. You can't help but feel awe-struck by the Romans' bold achievements as you stand before this ...

It's a chilly mid-winter afternoon in Segovia, in central Spain, and tourists are gathered at the foot of the city's Roman aqueduct, gazing up at its famous arches and taking selfies. Many of the ...