In twenty-five acres of Colorado, more gold has been mined than in all of Alaska and California combined. The Mollie Kathleen Gold Mine was at the heart of Colorado’s gold mining industry, and this tour takes visitors into mine shafts and tunnels that have been worked since 1889. An elevator ferries visitors 1,000 feet below the earth, and it is not for the claustrophobic.
After the event, sellers should file a special event sales tax return by the 20th of the month following the first day of the special event, if they have not remitted sales tax to the event organizer. For example, if an event was held from February 13-15, the special event sales tax return will be due on or before March 20th. More information about filing a return can be found on the "How to File a Special Event Return" section below.
Mesa Verde has been inhabited since 7500 BC by nomadic tribes, and the experts estimate that the first pueblos were built in 650 AD. The impressive cliff dwellings that still bring visitors to the park were built in 1200 AD. See the Cliff Palace and spend some time learning about these native americans at the Chapin Mesa Archeological Museum. Don’t forget to explore the Mesa Top Loop Road for some excellent viewpoints and canyon overlooks.
After the event, sellers should file a special event sales tax return by the 20th of the month following the first day of the special event, if they have not remitted sales tax to the event organizer. For example, if an event was held from February 13-15, the special event sales tax return will be due on or before March 20th. More information about filing a return can be found on the "How to File a Special Event Return" section below.

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Located in Central Colorado, Bishop Castle has quickly become one of the most popular roadside attractions in the state. In 1959, fifteen-year-old Jim Bishop dropped out of school and purchased a 2.5 acre piece of land for $450. This piece of land was located alongside southern Colorado’s San Isabel National Forest. In order to earn enough money to purchase the land, Bishop worked random side jobs and helped his father, Willard. Although Bishop funded the land purchase, his parent’s legally owned the land since Bishop was only a teenager.
All sellers participating in the event must collect the applicable state and state-administered local sales taxes due and remit the sales tax collected to the Department. However, sellers may elect to remit such taxes to the event organizer, if the organizer has obtained a special event license. A seller participating in the event may make this election even if the seller has obtained a special event license of their own.

Rough it and bring some camping gear – you can sleep under the stars, you’ll be so far away from the city lights that the stars seem to burn even brighter. There are plenty of cliffs if you’re a mountain climber. Hike along the South or North Rims for some excellent vistas, you’ll feel like you’re somehow closer to nature and that time seems to not exist here.

The National Museum of World War II Aviation in Colorado Springs focuses on education, primarily in helping visitors and K-12 students understand the role of aviation in the Second World War and how it shaped our world. The museum has twenty-two flyable aircraft in a hangar adjacent to both the Colorado Springs airport and Peterson AFB. In a second hangar visitors can watch volunteers restore World War II planes.


The Denver Museum of Nature & Science began with one man, Edwin Carter, who in 1868 moved to a one-room cabin high in the Rocky Mountains and singlehandedly amassed the largest collection of Colorado fauna in existence. In 1908, the museum in Denver formally opened, and it made world headlines when in 1926 museum researchers found fossil proof that North America was inhabited over 10,000 years ago.
The Rocky Mountains are the birthplace of the Arkansas River, the most popular river in the United States. It is also perfect for white water rafting, whether you want to go for a half day, or turn it into a multi-day trip extravaganza. There are many different rafting routes depending on your level of expertise, from family-friendly to expert Class IV.
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