Museum Lover's trip to Salisbury, Bath, Cardiff

Although Rick's detailed information about getting to the sights from train stations and luggage storage were extremely helpful, I think he way overrates Bath-I would rate Cardiff much higher than Bath.
I first went to Salisbury. Even the London train station had ambience, as there were numerous men in tails and women with fascinator hats who I assume were going to Royal Ascot by train. Rick's instructions for getting to Salisbury from the train station were very helpful, but I highly recommend taking an alternate route on Mill Street past the Queen Elizabeth Park when returning to the train station. If you're interested in archeology, the Salisbury Museum is a must-see. The close is charming, the food at the Refectory at the Cathedral was really good, and of course Evensong was wonderful. There were people in medieval dress outside the cathedral-someone said they were filming for program to be shown on U.S. tv this fall "The White Princess". I stayed at the Chapter House Hotel, which was very conveniently located immediately outside St. Ann's Gate and would let me stay for only one night on a weekend.
Thanks to Rick's info about baggage storage, I was able to spend some time in Bath on Saturday on my way to Cardiff. Got there too late for Mayor's Wallking Tours. The Hop-On Hop-Off Bus made this the least strenuous of my walking days (5-8 miles on other days). The Georgian House was the best part of the day in Bath-the docents really knew their stuff. Since I've been to Pompeii twice, I really wasn't interested in seeing the Roman Baths.
If you like museums, you must go to Cardiff. The Welsh Life Museum at St. Fagan's is a rural, less touristy, and more spread-out version of Williamsburg. I spent 4 hours there and my legs were too tired and the rain was getting to be too unpleasant for me to see everything. I definitely plan to do a day trip there the next time I come to London. We also went to Caerphilly Castle the next day when my husband got to Cardiff. Impressive and really liked the exhibit of Siege engines. It's amazing what they were able to do with stone in the 1200's in building both Salisbury Cathedral and this castle.
I was not happy about the short length of our trip-only 5 days, since my husband had to get back to work after his meeting, but I was pleased with how much I got to see. There are so many places easily accessible from London on the train.