There's something about transporter bridges that fascinates people. Less than twenty remain, all but one in Europe, and a society exists for enthusiasts. France has half a dozen such bridges and Britain three, at Newport, Middlesborough and Warrington. Towns lucky enough to have one forge fraternal links and visit each other's bridges regularly. The Bilbao example is still very much a working bridge crossing every few minutes, and the 'gondola' you can see above carries its passengers in relative luxury, for a small charge.