Pompeii's Roman Baths. Roman baths were very important to the Romans. It wasn't just hygienic, but it was a social opportunity. The baths had complex heating and cooling systems. They had ornately decorated each building.
It's funny how you have a man known as the Oncoming Storm, another known as the Dark One, a girl who stood up to the weeping angels, a man whom death has no hold over, another who survived Pompeii and will undoubtedly go on to do greater things, and it all pales in comparison to the capital E Evil! that the man in the bottom right corner is.