I'm visiting Denver next month and need some suggestions for things to occupy my time while Mr V is at work.

I've never been there (or anywhere in Colorado, for that matter), so... is there anything interesting to do? Google's great and all, but I know Googling my own city for touristy suggestions is kind of a mess.

So, do people do things there? We're staying Downtown and I'm cool with long walks or cab-able things. I like books and museums. I like snacking and sketching in public and people watching. I'm not really a tours and "must see landmarks" kind of gal.

Important: is Tattered Cover all it's cracked up to be?

Please and thank you!