Latest / The History of Germany: Kingdoms, War, and Rebuilding Europe — Fexingo History / The Aachen Chapel: Charlemagne's Octagon and the Birth of an Empire
Transcript
- Lucas: So we've talked a lot about Charlemagne's coronation, but today I want to go somewhere specific — the Palatine Chapel in Aachen. The octagon. It's the building that made his empire real, stone by stone. Luna: The octagon — that's the one that still stands in the cathedral today, right? Lucas: Exactly. The Aachener Dom as we know it is a patchwork of centuries, but the core — the octagon — was built around 800. And it's not just an old church. It's a political statement, a theological argument, and a smuggled piece of Rome all at once. Lucas: Think about what Charlemagne was trying to do. He'd been crowned emperor on Christmas Day 800, but he needed a seat that matched that title. He chose Aachen, a small spa town, not Rome, not Ravenna. And he built something that had never existed north of the Alps. Luna: Why Aachen? Why not some ancient Roman city? Lucas: Partly practical — it had hot springs, which he loved, and it was central to his kingdom. But it was also deliberately not-Rome. He wanted a new Rome, his own Rome. And the chapel's design says that loud and clear. It's a two-story octagon with a central dome, and the only direct model for that was San Vitale in Ravenna, built by the Byzantines two centuries earlier. Lucas: So he literally imported the blueprint from the Eastern Roman Empire. He even had columns and marble brought from Ravenna — some say from the palace of Theodoric — to line the galleries. Those columns are still there today, holding up the upper level where the emperor sat. Luna: Wow, so he was basically recycling Roman grandeur. Lucas: Exactly. And the symbolism goes deeper. The octagon shape echoes the ancient church of the Holy Sepulchre in Jerusalem, and the whole thing was dedicated to the Virgin Mary. But more than that, the number eight in Christian thought represents resurrection and new beginnings. Charlemagne was announcing a new Christian empire. Lucas: His biographer Einhard, who knew him well, wrote about the chapel in the Vita Karoli Magni. He describes the bronze railings, the marble columns, the gold and silver decorations. It was meant to overwhelm you, and it did. Luna: So what happened there after Charlemagne? I mean, was it just a royal chapel or did it become something bigger? Lucas: It became the coronation church for the Holy Roman Empire. For over six hundred years, from 936 to 1531, thirty-one German kings were crowned there. Otto the Great was the first one — he deliberately chose Aachen to link himself to Charlemagne. And after the coronation, the king would sit on the throne — a simple marble slab, no gold, no cushion — placed in the upper gallery, facing the altar. Lucas: The throne itself was made of four panels of Carrara marble, probably taken from an earlier building. It's not comfortable, and that's the point. It's a statement about authority being tied to duty, not luxury. You sit on stone because you're meant to rule with rigor. Luna: That's a different image from the jewel-encrusted crowns you see in museums. Lucas: Right, and the crowns were kept elsewhere, usually. The throne was the anchor. And then, centuries later, Frederick Barbarossa added his own layer — literally. He donated a huge bronze chandelier that hangs in the dome, seven meters wide, shaped like a heavenly Jerusalem, with eight towers and gates. It's still there, and it feels like a second building floating above the altar. Lucas: So the chapel is a palimpsest. Charlemagne's core, Ottonian additions, Barbarossa's chandelier, Gothic choir later. Each generation wrote itself into the story. And that's why it survived — because it kept being meaningful to whoever held power. Luna: It's almost like a living document, then. Lucas: That's a great way to put it. And before we dive into the later transformations, I want to pause on something that came up the other day. You know, this show is completely ad-free, and that's a choice we've stuck with because we think history should be something you can step into without a sales pitch. If that's been valuable to you, and you want to keep it that way, there's a link at buy me a coffee dot com slash fexingo. Just a small way to say thanks, and it genuinely helps us keep the archives open. Luna: Yeah, it's a pretty good deal — you get to listen, we get to skip the sponsor reads. And it's a nice feeling, honestly. Lucas: It's the best. But back to the octagon — because that building also carried a very specific political message about Charlemagne's relationship with the papacy. The chapel wasn't just a palace church; it was meant to be a counterweight to Rome itself. While the pope had St. Peter's, Charlemagne had his own center of sacred power, right in the heart of his kingdom. Lucas: We know he corresponded with Pope Leo III, and the coronation was a delicate dance. But the chapel was his statement: 'I don't need Rome to be sacred.' And that's a bold move for someone who'd just been crowned by the pope. Luna: So he was basically building his own Vatican, but in Aachen. Lucas: In a way, yes. And it worked. After Charlemagne's death in 814, he was buried in the chapel — his body placed in a tomb that's now marked by the Karlsschrein, a golden shrine from the 12th century. Pilgrims came immediately, and the cult of Charlemagne as a saint grew, even though he was never officially canonized. The chapel became a pilgrimage site in its own right. Lucas: But here's the twist: the chapel also became a bone of contention. When Charlemagne's empire split, Aachen ended up in the eastern kingdom — what would become Germany. So the building that was supposed to unify Europe under one emperor became a symbol of the German claim to that legacy. Every German king crowned there was saying, 'We are the true heirs of Rome.' Luna: And that claim persisted into the modern era, didn't it? Napoleon even went to Aachen, I think. Lucas: He did. In 1804, Napoleon visited the chapel and reportedly said, 'Here sat the great Charles.' And he had himself crowned emperor of the French later that year, in Notre-Dame, but he made sure to visit Aachen and touch the relics, the bones of Charlemagne, which are stored in the Marienschrein alongside other relics. He wanted that symbolic connection. Lucas: So the octagon has been a stage for imperial ambitions from the 9th century to the 19th. It's rarely been just a building. And even today, when you walk in, you feel that weight — the dim light, the height, the sense that you're standing in the center of a thousand-year-old argument about who gets to call themselves the heir of Rome. Luna: It's amazing that it's still standing, and still a cathedral. I guess a lot of history is just layers on top of layers. Lucas: And that's what makes it so rich. When you look at the Aachen Cathedral today, you're not just seeing one era. You're seeing the Carolingian core, the Ottonian additions, the Gothic choir, the baroque touches, even modern restoration. It's a physical timeline of German and European history, all in one place. Lucas: So maybe next time you're in Aachen, and you stand in that octagon, you'll remember: you're not just in a church. You're in the heart of an empire that tried to resurrect Rome, and in a very real way, it succeeded. Luna: I think I need to put it on my travel list. But before we go, is there any particular detail about the chapel that surprised you the most when you researched it? Lucas: For me, it's the fact that the columns from Ravenna weren't just decorative. They were loaded with political meaning. Taking columns from a Byzantine palace was like saying, 'We've inherited your authority, and we're putting it to better use.' It's not theft — it's a statement of succession. Luna: That's such a different way to see architectural recycling. It's almost like a conversation across centuries. Lucas: Exactly. And that conversation is still going on. When you stand in that octagon, you're part of it. So that's our story for today — the Aachen Chapel, where Charlemagne built a new Rome, and where Europe's leaders kept coming to borrow its glow.