Just curious. How would you define a Hard Core Gym? Is it based solely on equipment alone?
Hardcore Gyms are usually those gyms that have an equipment allowing you to lift heavier than the usual. These kind of gyms typically have dumbells exceeding 150lbs. and a lot -- A LOT of barbell plates which weigh more than a hundred pounds each.
It can differ according to the user, but definitely, it is not your usual mainstream (not to say expensive) gyms around the metro.
Just my two cents.