Aspen Art Museum (always free)
If you're looking for free things to do in Aspen, Colorado, good luck! Just kidding...
It turns out that Aspen has a free art museum and hiking / biking trail system that are both amazing Aspen attractions.
The museum is always free, but check their web site to see what is currently on display. If you want a more scenic experience, you can get to the museum by walking or biking the trail that goes through the neighborhoods and begins behind the visitor center at Rio Grande Ball Fields. If you walk the trail, make sure you visit the free and amazingly beautiful John Denver Sanctuary!
Location:
590 North Mill Street
Aspen, CO 81611 Map and Schedule
Aspen Art Museum Web Site and Schedule: 

Free Trips Random Panorama
Upcoming Colorado Free Days
-
Sat 02-04-12:
Art Museum -
Sun 02-05-12:
Doll & Toy Museum -
Sun 02-05-12:
Denver Zoo -
Mon 02-06-12:
Denver Zoo