Cologne is a stronghold of Romanesque church architecture. All 12 Romanesque churches are older than Cologne Cathedral, which was built in 1248. Their distinguishing characteristics are the typical Roman arches and the thick, fortress-like walls. The Claudius thermal spring in Cologne’s Rhine Park is one of the most beautiful spas in Europe. With its attractive architecture, a reference to the bathing culture of the Romans, the spa blends harmoniously with the beautiful parkland. At the Roman-Germanic Museum you can marvel at, among other things, Roman mosaics featuring scenes from the world of Dionysus (around 220 / 230 AD) and the reconstructed tomb of the legionary Poblicius (around 40 AD).