Devil’s Bridge in Wales is one of the strangest architectural sights in Europe: three separate bridges stacked on top of one another, each built in a different century. The lowest stone bridge is believed to date back to the 11th century, built at a time when engineering knowledge was primitive and the gorge was treacherous. According to local legend, the chasm was so impossible to cross that the Devil himself offered to build a bridge in exchange for the soul of the first living being to cross