During the 8th century, Charlemagne united all the Christian communities in northern Europe and centered his kingdom in the town of Aachen. The magnificent church that he built is still standing. Burt takes viewers on a tour of the city. We discover the strange legends of its ancient fountains, the reason the healing powers of its hot springs have been famous for over 2,000 years, and what made it one of the most important pilgrimage sites in Europe. We also find out about Aachen's spice cookies and why the people buy over 45,000 tons of them each year. And, of course, Burt introduces us to the signature foods of the city.