Last updated August 16, 2026

Colorado combines fourteen-thousand-foot peaks, a thriving craft beer and outdoor culture, and some of the best-preserved Ancestral Puebloan archaeology in the country, all within a state that averages over 300 days of sunshine a year. From the alpine tundra of Rocky Mountain National Park to the red rock spires of Colorado Springs, the ski slopes of Aspen, and the cliff dwellings near Durango, Colorado rewards travelers at every elevation. Whether you are searching for the best tours in Colorado, tickets to top Colorado attractions, the best places to visit in Colorado, or simply the most memorable things to do in Colorado, this guide covers everything worth knowing before you go.
Rocky Mountain National Park protects over 400 square miles of the Front Range, including Trail Ridge Road, the highest continuously paved road in the country, which climbs above 12,000 feet through alpine tundra. Elk, moose, and bighorn sheep are regularly spotted from the road and its trailheads, and the Alpine Visitor Center along Trail Ridge Road is the highest-elevation visitor center in the National Park System. Guided day tours from Denver are a popular way to see the park without driving yourself, typically combining Trail Ridge Road with stops in the gateway town of Estes Park. Summer wildflowers and fall elk rutting season, when bull elk bugle to attract mates, are both popular times to visit.
Book a Rocky Mountain National Park Tour →Denver sits exactly one mile above sea level, a fact commemorated by a marked step on the State Capitol building, and has grown from a 19th-century mining supply town into a genuinely walkable modern city with a strong food, brewery, and arts scene. The Denver Art Museum, Larimer Square, and the 16th Street Mall anchor downtown, while nearby Red Rocks Amphitheatre, carved into natural red sandstone formations, is one of the most famous concert venues in the country. Guided city tours cover the downtown highlights along with viewpoints and neighborhoods most first-time visitors would otherwise miss.
Book a Denver City Highlights Tour →Garden of the Gods, a free public park in Colorado Springs, holds some of the most dramatic red sandstone rock formations in the state, including Balanced Rock and the Kissing Camels, set against a backdrop of Pikes Peak. Pikes Peak itself, one of Colorado's 58 fourteeners, can be reached by car, cog railway, or on foot, and its summit views stretch across the Great Plains on a clear day. Jeep tours combining Pikes Peak and Garden of the Gods are a popular way to see both without driving the mountain road yourself, and morning departures typically offer the clearest views before afternoon clouds build up.
Book a Pikes Peak & Garden of the Gods Jeep Tour →Colorado's mountain resort towns draw skiers and snowboarders from around the world every winter, led by Aspen's four interconnected mountains, Vail's sprawling single-mountain terrain, and Breckenridge's mining-era Main Street just a short walk from the lifts. All three towns remain busy well beyond ski season, with mountain biking, hiking, and festivals filling the summer calendar. Guided day tours from Denver reach Breckenridge and the surrounding mountains without requiring visitors to drive the winding mountain passes themselves, often pairing the trip with stops at Red Rocks and the Continental Divide.
Book a Breckenridge & Mountains Tour from Denver →Mesa Verde National Park protects nearly 5,000 archaeological sites, including the multi-story cliff dwellings built by the Ancestral Puebloan people between roughly 600 and 1300 AD, making it one of the most significant archaeological preserves in the country. Cliff Palace, the largest cliff dwelling in North America with over 150 rooms, can only be visited on a ranger-led tour, and reservations are required well in advance during peak summer months. Full-day guided tours from Durango include transportation, a Cliff Palace visit, and lunch, which removes the pressure of booking timed entry tickets yourself.
Book a Mesa Verde Tour with Cliff Palace →Boulder sits directly against the Flatirons, a set of tilted sandstone slabs that form the backdrop for nearly every view in town, and combines a walkable Pearl Street Mall with some of the best trail access of any mid-sized American city. The University of Colorado Boulder anchors the local economy and culture, and nearby Eldorado Canyon offers world-class rock climbing within a short drive of downtown. Boulder's reputation as one of the fittest, most outdoor-obsessed cities in the country is well earned, with road cyclists, trail runners, and climbers a constant presence on the city's open space trails.
Great Sand Dunes National Park holds the tallest sand dunes in North America, rising over 750 feet against the backdrop of the Sangre de Cristo Mountains, a combination found almost nowhere else in the world. Sledding and sandboarding down the dunes are popular activities, and Medano Creek, which flows at the base of the dunes each spring from snowmelt, creates a temporary beach that draws families for a few weeks each year. Southern Colorado more broadly, including the historic town of Trinidad and the San Luis Valley, offers a quieter, less-visited alternative to the ski towns and Front Range cities further north.
According to the 2024 American Community Survey, Colorado has a population of approximately 5,957,493 people across 104,091 square miles, ranking it 21st among U.S. states by population. The median household income is $92,470, and the largest racial and ethnic groups are Asian (3.2%), White (64.8%), Hispanic (22.5%), American Indian and Alaska Native (1%), and Black or African American (3.8%). The median age is 37.5 years, and the per capita income is $50,489. Approximately 9.6% of residents live below the poverty line, compared to the national rate of 12.2%. Colorado's economy is anchored by aerospace and defense around Colorado Springs and Denver, a large technology and startup sector along the Front Range, tourism tied to skiing and national parks, and agriculture across the eastern plains.
Summer (June through August) is the best time to visit Colorado. The best time to visit Colorado for most travelers. Mountain passes and high-elevation trails are fully open, wildflowers bloom across alpine meadows, and Rocky Mountain National Park is at its most accessible. Fall (September through November): Aspen groves turn gold across the mountains by late September, crowds thin out from summer peaks, and elk rutting season brings some of the best wildlife viewing of the year to Rocky Mountain National Park. Winter (December through February): Peak ski season in Aspen, Vail, Breckenridge, and dozens of other resorts, typically running from late November through April, though many high mountain roads and trails close for the season. Spring (March through May): An unpredictable transition season with lingering snow at higher elevations, though Denver and the Front Range cities often see mild, comfortable weather well before the mountains fully open for summer.
The following official government websites provide additional planning resources, park information, and historical records for travelers visiting Colorado.
| Resource | Description | Website |
|---|---|---|
| State of Colorado | Official state government portal with links to all state agencies and services | colorado.gov |
| Colorado Tourism Office | Official state tourism website with travel guides and trip planning tools | www.colorado.com |
| Colorado Parks and Wildlife | State agency managing Colorado's 42 state parks, wildlife areas, and hunting and fishing licenses | cpw.state.co.us |
| Rocky Mountain National Park | Official National Park Service site for Rocky Mountain National Park, including timed entry information | www.nps.gov/romo |
| Mesa Verde National Park | Official National Park Service site for Mesa Verde, including Cliff Palace tour reservations | www.nps.gov/meve |
| Garden of the Gods | Official site for the free public park in Colorado Springs, including visitor center information | www.gardenofgods.com |
| History Colorado | State historical society operating museums and heritage sites across Colorado | www.historycolorado.org |
| Colorado State Archives | State agency preserving historical government records and documents | archives.colorado.gov |
| Colorado Ski Country USA | Trade association representing Colorado's ski resorts, with conditions and trip planning information | www.coloradoski.com |
| Colorado Census Data | Official U.S. Census Bureau QuickFacts for Colorado population and demographic statistics | www.census.gov/quickfacts/CO |