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.
Clear Creek History Park, Golden (always free)
Clear Creek History Park in downtown Golden is now free to walk through, sunrise to sunset every day.
City Park Jazz
Looking for free Denver music? City Park in downtown Denver has a free summer jazz concert schedule with top performers.
Parker Oktoberfest
The 8th Annual Parker Oktoberfest will be held in O'Brien Park in Old Town Parker Colorado on September 14th & 15th, 2013.
Manitou Springs Great Fruitcake Toss Festival (annually in January)
Colorado is known for it's goofy festivals and the Great Fruitcake Toss is certainly one of the headliners. This Manitou Springs tradition is held every year after the holidays in an effort to dispose of certain unwanted confections you may have acquired.
Some people prefer to launch their cakes by hand but many choose to build elaborate contraptions to give their fruitcakes the send off they deserve. There are various cake launching categories as well as competitions for the best and prettiest fruit cakes.
When:
The 2014 Great Fruitcake Toss festival has been cancelled. Hopefully it will be back in 2015.
Where:
In Manitou Springs at the Manitou Springs High School track.
401 El Monte Place
Manitou Springs, CO 80829.
Creek at the Peak Rafting Festival
The Creek at the Peak raft and kayak race takes place on June 23rd, 2012 and provides a great opportunity to watch rafters and kayakers compete for prizes while supporting a great cause. Come check out the race and the after race festival in Idaho Springs on Saturday June 23rd. The festival takes place on the east side of the Springs at the ball fields. The race finishes just west of Idaho Springs and begins in Lawson.
The festival begins at noon and will feature live music, food from local restaurants, and Idaho Springs' famous Tommyknocker beer!
When: Saturday June 23rd, 2012.
The festival begins around noon and continues through the evening.
The races begin at 5pm and will probably finish around 7:30pm.
Where: Idaho Springs at the ball fields on the east side of town.
For all the details, check the Creek at the Peak 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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Loveland Ski Hooky Days (Second Thursday Monthly)
For the 2019 ski season, Loveland Ski Area and 95.7 The Party FM are offering $25 lift tickets on the second Thursday of each winter month.
They also offer a 2 for 1 ticket for the following week if you can't attend on Thursday. To get the $25 price, or the 2 for 1, you have to go to the "95.7 The Party" web site and sign up as a "Party VIP", then print the coupon.
When:
Thursday, February 14th, 2019
Thursday, March 14th, 2019
Where:
Loveland Ski Area is located off of I-70 just before Eisenhower Tunnel. Take the Route 6 exit (Exit 216) and you can't miss the ski area. Loveland is broken up into 2 distinct areas with a shuttle bus that runs between them. Loveland Valley (left off the exit) is considered the learning and training area and Loveland Basin (right off the exit) is the main ski area. A shuttle bus runs between both.
McCormicks Fish House and Bar (Downtown Denver)
I am a sucker for old buildings, and McCormicks Fish House and Bar, located in LoDo in downtown Denver, has everything I'm looking for.
Celestial Seasonings Tour in Boulder (always free)
The free Celestial Seasonings tour is a fun way to learn about tea and tea making, while sampling the most popular Celestial Seasonings flavors! A stop at the Celestial Seasonings tour is a favorite vacation destination if you're traveling to Colorado.
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.
Prospect Artists Studio Tour
Art tours are always popular in Colorado, with several art centers located throughout the state. One of the main art districts on the front range is Prospect New Town in Longmont. The Prospect Artists in Longmont, Colorado open their studios each year for the last weekend of June. You will have the opportunity to view each artists' latest work and see the interior of each member's home or store front in this architecturally unique community. This is a special community of artists with unique expressions to match the unique architecture where they live and work.
2012 Schedule:
Saturday June 30 and Sunday July 1, 2012.
12 noon to 6 pm each day.
Where:
Prospect New Town.
Near Pike Road and North 107th Street
Longmont, Colorado, 80504.
Look for the green studio tour signs in front of the studio locations.
A map of the tour is available at www.prospectartistsassn.com.
For the latest details check the Prospect Artists Association web site:
U.S. Air Force Academy Visitor Center and Chapel, Colorado Springs (always free)
The United States Air Force Academy at Colorado Springs has a unique visitor center and chapel area that is free and open to the public. Visitors can learn a wealth of information about the academy and it's history as well as view the planes on display. The Chapel is absolutely beautiful and due to it's unique architecture it's probably the most photographed building in all of Colorado.
Children's Museum of Denver Free Days (first Tuesday monthly, 4-8pm)
One of the best free Denver attractions for kids, the Children's Museum of Denver's free day takes place from 4pm to 8pm on the first Tuesday of every month, known as Target Tuesdays.