What was the name of Charlemagne's palace chapel in Aachen?

Charlemagne’s palace chapel in Aachen was called the Palatine Chapel. It was the religious centerpiece of his palace complex and is now preserved as the central part of Aachen Cathedral in Germany. The chapel also held Charlemagne’s remains and became a major monument of the Carolingian Renaissance.

Construction began around 792, and Pope Leo III consecrated the building in 805 in honor of the Virgin Mary. Its design was centrally planned, with an octagonal domed core surrounded by a sixteen-sided ambulatory and an upper gallery. The royal throne stood in the gallery, allowing the king—and later emperor—to face the liturgical space below.

The architecture combines Classical, Byzantine, and early medieval elements. Its decoration was strongly influenced by the sixth-century Basilica of San Vitale in Ravenna, but the Aachen building simplified that model and used distinctive bronze work, marble revetment, and an imposing dome. Later rulers used its connection with Charlemagne to reinforce their legitimacy: German kings were crowned there from 936, and coronations continued until 1531. The chapel is now part of a UNESCO World Heritage Site.