Take in the beautiful scenery of Colorado's Front Range, the gateway to Rocky Mountain National Park, as you zip through the trees! Just a 30-minute drive from downtown Denver lie three of Colorado’s longest zipline tracks. 6-line Zipline: Enjoy 4 hours of fresh air, scenic views and thrills on the 6-line zipline in the Rocky Mountains. Ride on six lines that range from 850 feet (259 m) to 1,900 feet (579 m). Soar through the treetops and experience three of Colorado’s longest ziplines! There is a 10-minute uphill hike between the first and second zipline and minimal walking between the others; above-average physical condition is recommended.
Crested Butte may be off the beaten path, but it’s worth the trip as one of the most stunning mountain towns in all of Colorado. The atmosphere is one that combines the charms of a historic mining town with hippy flair. Set at the base of the Rockies, it’s world-renowned for skiing, but in the warmer months, it becomes a top hiking and mountain biking destination, as well as drawing countless visitors for the chance to take once-in-a-lifetime whitewater rafting adventures through the Taylor Canyon. A true mecca for mountain bikers, there are hundreds of miles of trails linked together to create an endless day of touring from Gothic to Mt. Crested Butte, Irwin to Gunnison, or even from Crested Butte all the way to Aspen. If you don’t have a bike, stop by Big Al’s Bicycle Heaven and rent one for the day or for the length of your stay. In addition to riding the trails, you can ride around town and check out all the historic buildings and funky alleyways.
Tucked deep in the San Juan Mountains in southwestern Colorado, this carefully restored 19th-century ghost town and natural spa is surprisingly well appointed. The rugged, old-timey building exteriors hide high-end features such as cathedral ceilings, air conditioning, and gas fireplaces. Dolores has four parks and a peaceful bike trail that takes peddlers along the tumultuous Dolores River. You can enjoy hands-on exhibits and a nature hike at the Anasazi Heritage Center, or explore an exact replica of the original narrow-gauge rail car, the Galloping Goose. Share a romantic meal with tasty cocktails at Sophia’s Bistro.
Offering visitors a myriad of outdoor activities to choose from, Steamboat Springs is a fun-filled vacation destination for all types of travelers. While skiing and snowboarding at Mount Werner are the city’s biggest draws, visitors can also explore its vibrant cultural scene at the Steamboat Symphony Orchestra or the Steamboat Art Museum. Take a day to soak in the hot mineral springs at Old Town Hot Springs or Strawberry Park Hot Springs, go for a 360-degree mountain view gondola ride to the top of Mount Werner, or soak in the breathtaking waterfall views at Fish Creek Falls. Summertime is perfect for tubing on the Yampa River, where visitors can hike to iconic landmarks like Rabbits Ears or try their hand at trout fishing along the river.
At 265,000 acres, Rocky Mountain National Park isn't the country's largest national park, nor is it the most-frequented with about 4 million annual visitors (compared to Great Smoky Mountains National Park's more than 11 million visitors). But there is something definitively magical about RMNP, which rises 12,183 feet into the Colorado sky. The main attraction is hiking its 350-some miles of trails that wind through pine and spruce forests, glittering alpine lakes, swaths of wildflowers and if you're lucky, some elk or bighorn sheep. And maybe it's the thinner atmosphere that goes to visitors' heads, but even the most jaded report feelings of awe and wonder after a day or two of breathing in that refreshing mountain air.
Glacial geology in Rocky Mountain National Park can be seen from the mountain peaks to the valley floors. Ice is a powerful sculptor of this natural environment and large masses of moving ice are the most powerful tools. Telltale marks of giant glaciers can be seen all throughout the park. Streams and glaciations during the Quaternary period cut through the older sediment, creating mesa tops and alluvial plains, and revealing the present Rocky Mountains.[61] The glaciation removed as much as 5,000 feet (1,500 m) of sedimentary rocks from earlier inland sea deposits. This erosion exposed the basement rock of the Ancestral Rockies. Evidence of the uplifting and erosion can be found on the way to Rocky Mountain National Park in the hogbacks of the Front Range foothills.[60] Many sedimentary rocks from the Paleozoic and Mesozoic eras exist in the basins surrounding the park.[62] 
Crested Butte - this relaxing destination in Northern CO remains one of the state's premier outdoor playgrounds. It's fun to explore, and if you've never tried hanging whitewater rafting, this is a great spot to start. For activities a little easier on the blood pressure, try one of the many local area hikes, or a romantic evening with dinner at Le Bosquet or Timberline.
The A.R. Mitchell Museum of Western Art and the many galleries in the creative district are bound to thrill art lovers, while the Southern Colorado Repertory Theater provides live entertainment. Outdoor enthusiasts can go camping, fishing, hiking and boating in the Trinidad Lake State Park, seek dinosaur tracks in the Comanche National Grassland, or go trout fishing on the Purgatoire River.
Colorado’s second-largest city, Colorado Springs is nestled at the foot of the majestic Pikes Peak. Filled to the brim with scenic landscapes, escape your daily stresses for a weekend away exploring the Pikes Peak and Garden of the Gods. Capture the perfect shot of the rocks framing the snow-capped splendors, or visit the area’s cultural attractions such as Pioneers Museum, American Numismatic Association Money Museum or the Cheyenne Mountain Zoo. The downtown area is full of impressive art galleries, in addition to a U.S. Olympic Training Center and the U.S. Air Force Academy.
With over 1,800 acres of skiable terrain in Beaver Creek, it’s no wonder this resort town is a top choice for a weekend trip in Colorado. Beaver Creek is home to the Birds of Prey downhill course, too—a difficult run that’s often included in World Cup races in early December. Not up to the challenge? No worries. There’s plenty more to do like catching a show at the Vilar Performing Arts Center or hanging out at the Beaver Creek Resort. Swing by in the afternoon for a taste of their fresh-baked (and free) chocolate chip cookies.
Located 17 miles from the Winter Park ski resort and 16 miles from Vail, Frisco is the perfect small-town getaway. You can relive life as a miner in the Old West at Frisco’s historic park and museum or take a mountain bike ride that takes you over 55 miles of paved pathways. Strap on snowshoes or cross-country skis for a turn around the Frisco Nordic Center. During the summer, paddle or motor out to the Sentinel Island from the Frisco Bay Marina. Rent a cozy condo at Mountainside, or consider renting a lovely house on the Blue River. Warm up the evening with delicious farm-to-table fusion fare Italian-style at Bagalis Frisco.
Above tree line, at approximately 11,000 ft (3,400 m), trees disappear and the vast alpine tundra takes over.[69] Over one third of the park resides above the tree line, an area which limits plant growth due to the cold climate and strong winds. The few plants that can survive under such extreme conditions are mostly perennials. Many alpine plants are dwarfed at high elevations, though their occasional blossoms may be full-sized.[73]
