Hot Springs National Park is different from any other Park that we've visited because it's an urban park. The town of Hot Springs literally grew up around the park!
Behind Bath House Row is the Promenade where the patients were told to exercise and partake of fresh air. The spring water of Hot Springs flows right out of the mountain and is perfectly safe to drink. In fact, it is said to have healing properties due to all the minerals! Patients were encouraged to "quaff the elixir." There are fountains throughout the park to drink the water, you just have to be careful not to burn yourself! As you walk along the Promenade you can see where the Park Service has capped the springs to protect it as drinking water.
They also have jug filling stations where anyone can come and fill up jugs! We filled two!