Considering the Beach Terrace Inn in Carlsbad?
A VT member wrote the following comment about visiting Carlsbad:
Museum in the Basement by lmkluque
In the basement of the Carlsbad Mineral Spa is a museum about the history of the well and it's water. I didn't see it because the spa was closed when I arrived. Next time I go up, I'll check it out and add the information here.