The cathedral is the memorial and funeral place of Charlemagne (+814). During 936-1531, 30 kings and 12 queens were anointed, crowned and enthroned here. In the Middle Ages, it was one of Christendom's most important venues for pilgrimage, together with Jerusalem, Rome and Santiago de Compostela. Heiligtumsfahrt (the Aachen pilgrimage) takes place every year since 1349 (the next one will be in June 2014). In 1978 it was the first German building to be inscribed as a UNESCO World Heritage Site.