Bath is a city in north east Somerset. It was founded during the Roman invasion of Britain as the garrison town guarding the crossing point of the fosseway and the river Avon.
The Romans during their occupation built a collection bath houses fed by the local hot spring (I think it is the only hot spring in England if not Britain), to do this the Romans had to knock down the temple of the local tribe's god which was already on the spring site.
The Romans being a superstious lot named the town after the local god and dedicated the baths to him giving rise to Bath's Roman name Aquae Sulis (Sulis's Water).
Since then Bath has been a tourist resort originally people went there to bathe (hence the modern name) but now they go there for the Architecture and the history.
The Bath has been declared a world heritage site due to the beauty and scale of the city's architecture (Pseudo Classical style where the city blocks are designed to look like mansions) which appeared during the Georgian era when King George made the city the place to go during the Summer Season.