If you enjoy dancing and eye candy:
Pretty much the biggest night club in CO. Attracts pretty much everyone of all types. Ages from 21 to whatever. There's always this one old guy that has a couple of sexy dudes with him all the time. Themed nights but I usually only go for the circuit night. Less crazy. Friendliest people ever too. But at the same time, most gay dudes are pretty cool.
And yeah, there's a lot of other one too. But I'm not to familiar with the rest. Good luck!