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.
Colorado Day, Free Colorado State Parks (First Monday in August)
Colorado Day is an annual tradition of celebrating Colorado's acceptance into statehood. Colorado was first recognized as a state on August 1, 1876, and now we celebrate Colorado Day on the first Monday of every August.
Pueblo Chile Festival
The Pueblo Chile & Frijoles Festival in Southeast Colorado is guaranteed to burn your eyes with fun! Besides being overcome with tears in the chili roasting area, you will find a diverse selection of music and dance performances as well as local vendors.
Bluff Lake Nature Center, Aurora (always free)
Bluff Lake Nature Center is a free wildlife and nature center park in Aurora in the Stapleton area. Hiking trails wind their way through the park, passing a seasonal lake and overlooks. This is an excellent Denver area attraction for nature watchers.
Colorado July 4th Fireworks 2017
Colorado puts on quite a celebration for Independence day, with a large number of fireworks shows across the state. There are events of all sizes in 2017. Here we list some of the larger shows both in the Denver metro area as well as across the state.
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: 
The Boulder Creek Festival on Memorial Day Weekend
The Boulder Creek Festival takes place every Memorial Day weekend in Boulder along Boulder Creek, and features great free music, dancing, rides for the kids, and other entertainment. This is one of the best festivals of the year, and a great thing to do on Memorial Day weekend.
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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.
McLoughlin's Restaurant and Bar (Downtown Denver)
McLoughlin's is one of my go-to places when I'm craving happy hour specials in downtown Denver.
Euclid Hall Denver Happy Hour (Downtown Denver)
OK, I normally make it a policy to only check out Denver happy hours that have food specials with drink specials. However, when I saw that that 5280 had deemed Euclid Hall the best Denver happy hour, I had to check it out for myself. I went in skeptical, and came out satisfied and stuffed.
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.
Avery House, Fort Collins (free Saturday and Sunday)
The Poudre Landmarks Foundation has some of the best Fort Collins attractions for history buffs. Their historic Avery House in Fort Collins offers free tours on Saturdays and Sundays from 1pm to 4pm. The tour guides provide a wealth of information about the city's early days, and what life was like in the front range in the late 1800's. This is one of the great historical things to do in Colorado, as Fort Collins has a rich and colorful early history in the settling of Colorado.
When:
Year-round Saturday and Sunday
1pm to 4pm
For 2014, the Poudre Landmarks web site is incomplete and it is unknown whether Avery House tours are still taking place. Hopefully they will release an updated schedule soon. Call them to check on the latest situation: 970-221-0533
Where:
328 West Mountain Avenue
Fort Collins, CO 80524
Avery House Web Site:
Shell Gas Two For One Ski Ticket
For 2014, Shell gas stations are offering 2 for 1 vouchers at several ski areas with a 10 gallon gas fill up. This means that if you buy at least 10 gallons of gas, you get a coupon good for a free lift ticket if you purchase one full price adult lift ticket. The deal is good at several ski areas.
Unfortunately, full price adult lift tickets have become so expensive that this isn't much of a "deal". But if you just want to ski one day at a participating resort this year, this will get you on the slopes for less than full price.
In Colorado, 2014's participating resorts are:
Copper Mountain
Crested Butte
Loveland
Monarch
Powderhorn
The SkiFreeDeals.com web site has a full list of participating Shell stations and ski resorts.
Learn more at skifreedeals.Com:
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: