Trier had been on my bucket list for a long time, as a history buff, and it was a treat to finally be able to go there and go bit by bit through the extensive Roman ruins there. What remains of the bathhouse is surprisingly well-managed and allows one to get a sense of the size of the old Roman baths. Plus, it was cool to be able to walk through what would have been the underground service levels of the facility. The Black Gate well deserves its iconic status, as it's one of the best preserved Roman structures outside of the Mediterranean region.