Upon its completion in 1247, the twice collapsed and rebuilt Cathedral of Saint-Pierre of Beauvais boasted the tallest choir ever built in Europe, and is still one of the most daring feats in Gothic architecture. Like many gothic cathedrals, the one in Beauvais was designed in the shape of a cross. The 47.5 meter tall nave is interrupted by a transept, which would have separated the pews from the choir and apse. The interior is lavishly decorated with stained glass windows, an intricately carved wooden altarpiece, and a functioning medieval clock.