Lion's head drawer of the main portal of the Aachen Cathedral. 43 quintals heavy bronze doors were cast around 800 in Aachen and were in the sixteen corner of the Cathedral until the year 1788 between Westwork and Oktogon. The Aachen Cathedral was inducted in 1978 as first German cultural monument under no. 3 in the World Heritage list of UNESCO. The foundation stone for the construction of the Carolingian renaissance took place in the year 796.