Hot Springs
  We drove into Hot Springs for the day.  It had a lot more traffic than
  we'd seen the whole week.  We made appointments at Quapaw Baths, then went to the park visitor center
  and to the top of the mountain tower.  Our camera battery died before we could take any pictures
  from the tower.  Hot Springs was the strangest National Park we've ever visited; the main thing to
  see is historic buildings and the actual hot springs are only visible in fountains. 

we took turns taking mineral baths at Quapaw Baths, in one of the historic 1920s buildings (modernized inside)
 

the water in this fountain is hot!
 

cooling room in the historic Fordyce Baths (now the park headquarters)
 

we thought this shower was a little scary
 

private bath cabinets
 

stained glass ceiling in the men's area (much nicer than the women's area)