The 20 metres high tower was a part of the imperial palace of Charles the Great, but its function remains a mystery - no one could live there.
Wikipedia (German) http://de.wikipedia.org/wiki/Granusturm
Email denkmalpflege@mail.aachen.de
Phone +49 241 432 6160
Address Markt, 52062 Aachen, Germany
Coordinates 50°46'33.6" N 6°5'3.192" E
