This rich treasury is home to a unique collection of precious objects linked to the history of the cathedral, with over a hundred outstanding works of art. These include the gold and silver Bust Reliquary of Charlemagne (after 1349), a gift of Char..

The heart of the cathedral is formed by an octagonal domed chapel that Charlemagne started building around 800. It was the first Byzantine-influenced construction seen north of the Alps. The Gothic chancel, started in 1355, was consecrated in 1414 fo..

The town hall was built in the 14C on the site of Charlemagne's palace, of which only the Granus tower remains. The façade of the tower, overlooking the market place, is decorated with statues of Emperors and kings crowned in Aachen. Inside the tower..