Dinosaur Ridge in Morrison (always free)
This park in Morrison, Colorado (southwest of Golden) is really an outdoor museum, where you can hike or ride a shuttle as you examine evidence of Dinosaur activity in Colorado. One of the popular Colorado attractions for kids.
Denver Mountain Parks (always free)
The city of Denver operates a series of beautiful and diverse parks in the foothills areas west and south of Golden.
Two Ponds National Wildlife Refuge, Arvada (always free)
Two Ponds is a very small National Wildlife Refuge which was created as a place for migrating birds to stop and rest.
City Park Jazz
Looking for free Denver music? City Park in downtown Denver has a free summer jazz concert schedule with top performers.
Colorado Free Fishing Weekend (First Weekend in June)
On the first weekend of June each year, Colorado waives fishing license requirements. This is a great chance to grab your gear out of storage and take the family to a nearby lake or stream for some serious trout fishing!
Snowmass Summer Concerts
On summer Thursdays and Fridays the laid back atmosphere of Snowmass Colorado comes alive with their free Snowmass Village Summer Concerts. The music, set up on a Snowmass ski run stage near the upper village, is loud and wild.
When:
Summer Thursdays (and sometimes Fridays) from 6:15 to 8:30pm.
Where:
Snowmass upper village.
Schedule:
The 2013 Snowmass Village Free Summer Concert schedule is as follows:
June 20: Freddy Jones
June 27: The Dunwells
Friday July 5: CJ Chenier
July 11: The Revivalists
July 18: Mountain Standard Time
July 25: J.Boog
August 1: Tab Benoit
August 8: Nigel Hall
August 15: Robert Walters
More Info from the Aspen Snowmass web site: 
Golden Super Cruise Car Show (first Saturday monthly May-October)
The South Golden Road area around the Sonic drive-in is home to a very large monthly car show called the Golden Super Cruise. They typically hold this event on the first Saturday of every month from May through October. One of the best things to do in Golden on a Saturday evening.
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Zebra_Image has a deprecated constructor in /home/ec2-user/www/public_html/freeindenver/components/com_jem/classes/Zebra_Image.php on line 46
Colorado Railroad Museum in Golden (free days)
The top Colorado attraction for train enthusiasts also has free days! A few free days are held each year at the Colorado Railroad Museum in Golden. This museum features a diverse collection of trains, some restored and some not, located outdoors. You can climb aboard some of them. There are also indoor museum exhibits and a huge indoor miniature train layout that is operated by quarters.
Hammonds Candy Tour (always free)
Hammond's Candies in Denver has been producing high quality hard candy and chocolates since 1920. The Hammonds Candy Tour shows you the process of creating and packaging Hammonds candy. After you enter the tour center and receive your tour sticker, free Hammonds candy samples are provided and you can take a hat if you like as well. You can browse the OOPS! room where Hammonds candy mistakes can be purchased for low prices.
The tour begins by watching a short movie describing the Hammond's Candies company, it's history, and the candy making process. You then enter the production viewing area where you watch the workers create candy from start to finish. You then move to the packaging area and finish with another free sample to take home before you enter the store and gift shop.
Hammonds Candy Tour Hours:
Monday - Friday 9am - 3pm
Saturday: 10am - 3pm
Closed Sunday.
Where:
5735 N. Washington Street, Denver, Colorado.
58th Street between Washington Street and I-25.
For more information visit the
Hammonds candy tour site:
Colorado Sports Hall of Fame (always free)
The free Museum at the Colorado Sports Hall of Fame at Invesco Field showcases the accomplishments of Colorado's finest athletes across many sports disciplines from the most popular spectator sports to little-known gems.
There are exhibits featuring many of the greatest triumphs in Colorado sports history, from the Broncos to Golf to women in sports, as well as an interactive Kid's Zone. There is also an exhibit honoring the National Sports Center for the Disabled and the Special Olympics.
Hours
September thru May: Thursday -- Saturday 10am to 3pm
June, July, August: Tuesday -- Saturday 10am to 3pm
Beware of special hours and closures before or during Broncos home games, contact the Museum to confirm hours.
Location
Invesco Field Gate #1 (western side)
For the latest info, check the Colorado Sports Hall of Fame web site:
Irish Snug Denver Happy Hour (Capitol Hill)
Happy hour at the Irish Snug just south of Denver offers cheap, quality food and more than affordable drinks. Their happy hour menu is offered every day from 3-7 and 10-12. A diner will encounter traditional Irish fare, such as corned beef sliders and sangers. If you don’t like Irish food, don’t worry. The Irish Snug also offers burgers, tex mex and sophisticated American bar food.
Free First Fridays Art Walk
On the first Friday of every month, art districts around Colorado open their galleries late for an evening of gallery hopping. Most districts will have great food, drinks, music and an all-around festive atmosphere.
Denver Firefighters Museum Free Days
The Denver Firefighters Museum free days are a fun way to learn about real Colorado firefighters and the history of fire fighting in Colorado.
Santa Fe Art Walk (first Friday monthly)
Denver's Art District on Santa Fe Drive features one of the more diverse collections of galleries in the United States, all situated within a short walking distance.