Behind the predominantly neo-Gothic Rathaus, Erfurt's most outstanding attraction spans the Gera River. This Renaissance bridge, similar to the Ponte Vecchio in Florence, is the longest of its kind in Europe and the only one north of the Alps. Built in 1325 and restored in 1967–73, the bridge served for centuries as an important trading center. Today antiques shops fill the majority of the timber-frame houses built into the bridge, some dating from the 16th century. The bridge comes alive on the third weekend of June for the Krämerbrückenfest.