I went to Bath a few times years ago. The Roman baths are interesting, but admission is quite expensive. I went on a slightly cold autumnal day, and the water in the bath was gently steaming into the sky above. Around the outside of the bath is the location where the hot spring flows out of the ground, and into the main bath via a small open channel. You have to step across the channel during the tour, and there were signs saying not to put your hands in it. I had paid a lot of money to get in, so I ignored the signs, and put my hand in the small stream at my feet to feel the temperature. I'm still alive, so I obviously survived the experience of putting my hand in the hot spring.
Another time, a girlfriend wanted to visit the Fashion Museum, so we went there. You would love it, as they have many costumes going back hundreds of years.
Fashion Museum in Bath
Apart from the Roman baths and the fashion museum, there is also the Georgian architecture to admire.
Royal Crescent - Wikipedia