Hot Springs is a fun trip. We’re trying to see as many national parks as we can, and this was an easy one. We drove and stopped in Memphis for a bit to see cousins. It’s a reasonable stop option. I think, though, with a 17 year old, Nashville would be more fun.
The Buckstaff baths were recommended to us and were great. Get there right at opening to avoid a wait. Bring flip flops.
Cousins recommended the Ohio Club to us—they love it but we didn’t want to go with our young kids. It would likely be fun for a teenager.
Other recs—lunch at Best Cafe, Garvan Woodland Gardens, and the Gangster Museum.