
Cologne Cathedral
Begun in 1248 to house the Shrine of the Three Kings, the gilded reliquary Nicholas of Verdun made for the bones Frederick Barbarossa's chancellor had carried off from Milan, and left unfinished in 1560 with a medieval crane standing on the stump of the south tower for three centuries. The original façade drawings turned up in the 1810s and Prussia finished the building to them by 1880, at which point its 157-metre spires made it the tallest structure in the world for four years. Inside are the Gero Cross of about 970, the oldest large crucifix north of the Alps, and Gerhard Richter's south transept window of 2007, 11,500 squares of coloured glass arranged by a random number generator.














