It has an Olympic size pool, squash, badminton and volleyball courts and top notch cardio equipment. Granted, it is hotter than hell in the fieldhouse, but the Dalplex has so many amenities it easy to overlook the minor inconveniences. Just remember to drink a lot of water.
6260 South Street, 494-3372
Runner-up: ymca
Lots of Metro locations where you can go and pump iron.