Gothic cathedrals represent medieval architecture's greatest achievements—ambitious monuments where master architects, carpenters, stonemasons, and glassworkers pushed engineering to its limits.

Cologne Cathedral is a High Gothic five-aisled basilica (144.5 m long), with a projecting transept (86.25 m wide) and a tower façade (157.22 m high). The nave is 43.58 m high and the side-aisles 19.80 ...