“For years, lovestruck visitors to Paris had affixed locks, often inscribed with their initials or names, to the wire mesh panels along the Pont des Arts, flinging the keys into the Seine River below. But last year, after a section of the bridge’s railing collapsed under the weight of some 700,000 declarations of fidelity, the city removed the locks, citing reasons of aesthetics and security.” Now, though, the bridge really is a pont des arts.