Photo by Scott Dressel-Martin

Free Days July 10 & Sept. 3

Denver Botanic Gardens offers free-admission days throughout the year that allow people to stroll the gardens, tropical conservatory and greenhouse.

The main gardens are at 1007 York St. The Chatfield location, at 8500 W. Deer Creek Canyon Road in Littleton, has a historic farm and schoolhouse, a seasonal butterfly garden and a nature trail.