The Karlsschrein in Aachen Cathedral was made in Aachen at the command of Frederick II, Holy Roman Emperor and completed in 1215, after Frederick II's grandfather, Frederick Barbarossa had exhumed Charlemagne's bones from their resting place in the Palatine Chapel, Aachen in 1165.
Frederick II personally carried out the transfer of the bones and the sealing of the shrine on 27 July 1215, the first anniversary of the Battle of Bouvines, which had spurred him to seek the German throne. Two days before, he had been crowned again and finally as the King of the Romans at Aachen.
Wikipedia https://en.wikipedia.org/wiki/Karlsschrein
Address Domhof 1, 52062 Aachen, Germany
Coordinates 50°46'29.289" N 6°5'1.512" E