There are a number of threads in this forum on what to do in and around Denver. For the most comprehensive answers to your question, I suggest looking back at these other threads, as those who have already posted their comments to similar questions in earlier threads may not want to repeat the process. Though I am sure that those in this area will respond to specific questions (Del Frisco or Brooks for steak? Red Rocks or Coors Amp. for a concert? etc.).