Aquisgran Cathedral
Considered the oldest cathedral in northern Europe, the cathedral of Aachen (Aachen, Germany) is a building of great historical significance. Charlemagne had built a large palace complex built within the same octagonal church for private use. For that reason this chapel is called Palatine Chapel, the artistic exponent of political power by Charlemagne reached this cathedral walls have seen the coronation of 30 German kings in the marble throne. UNESCO declared it a world heritage site, for that reason it is very well preserved.