Sleep helped the altitude sickness, and after a full night in one of the research site’s cabins, I felt much revived. Brian fished in the morning and I scrambled up a rocky outcropping with a graduate student studying pikas through their poop (a non-invasive way to analyze stress levels of this small mammal that looks like a cross between a rabbit and a mouse): but our afternoon was free. What to do?
Getting to Ouray is a spectacular adventure in itself, especially if you take the Million Dollar Highway that follows a 25-mile stretch of US 550 from Silverton to get here. The road’s endless twists and turns, many at the edge of sheer cliffs, brings some of the most jaw-dropping vistas in the world. As you turn each corner, the views of the soaring, jagged peaks of the San Juan Mountains seem to keep getting better – providing a pretty big clue as to why Ouray is often called the “Switzerland of America.” It’s an ideal spot for soaking in natural hot springs, gazing at countless waterfalls, and even exploring old mines.  For an in-depth knowledge of the town’s gold and silver history, head to Bachelor-Syracuse Mine where you’ll find out what it was like to be a miner back in the day. There are also lots of interesting shops on the main street, historic walking tours and even a ghost tour if you’re brave enough.

In summer you can swap skies for hiking boots and discover endless trails through the beautiful landscape, or try cycling, fishing, rafting, kayaking, rock climbing and back-country camping. The Telluride Arts District is packed with arts and culture attractions and the town has also been named one of the top 20 foodie destinations in the country. Things to Do in Telluride
Take your love to new heights by ringing in your celebration at a unique tree house cabin rental near Pagosa Springs. From the private hot tub to feeling like you are above the trees with epic views of Pagosa Springs, this rental cannot be beaten. Guests would be right to take a vacation to this site in the winter so they can take advantage of skiing Wolf Creek Pass. Snuggle up with your partner from the comfort of a luxurious accommodation for your honeymoon.
Soak in the hotel’s hot tubs after a day of skiing or warm up in front of the crackling fire in the lounge before heading out to enjoy one of the many activities the area has to offer. Enjoy hiking, fishing, mountain biking, skiing, or snowboarding. Wildlife lovers will delight in all the birds and wildlife to be found in the region, and romantics can stargaze on clear nights.

The Pool is a large turbulent water pocket formed below where Spruce and Fern Creeks join the Big Thompson River. The winter route is along a gravel road, which leads to a trail at the Fern Lake trailhead. Along the route are beaver-cut aspen, frozen waterfalls on the cliffs, and the Arch Rocks.[44] The trail to Alberta Falls runs by Glacier Creek and Glacier Gorge.[44]

There is a reason why this luxury resort is called Garden of the Gods: if the Gods lived in the resort, they would never want to leave because of its breathtaking beauty! This resort features a golf course and full spa. Spend a romantic day getting pampered or walking in the gardens. Later, you can treat yourselves to fine dining at Kissing Camels Grille, where you can enjoy fresh local ingredients used to prepare the superb meals.
While it is possible to travel through Rocky Mountain National Park and not catch sight of any wildlife, we venture to say that is an unlikely experience. From everyday sightings of chipmunks and mule deer to the moving experience of viewing elk in rut (the mating season), the animals in the park let you know that you are part of something truly wild. Some of these critters are harder to spot than others - they might camouflage themselves in the trees or hide in the underbrush - but look closely and you may have an encounter unlike any other. 
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. 
If you make the quick jaunt to Denver’s neighbor-to-the-north, start with the Fort Collins Museum of Discovery.  Debuting in November 2012, the museum features over interactive 100 exhibits and activities such as the Music & Sound Lab, where physics, technology, history and hands-on playing and composing lead to inspiration.  The Environmental Learning Center is a 212-acre site comprised of four distinct ecosystems – wetlands, riparian, cottonwood forest and prairie – and offers plenty of programs for kids. The Rocky Mountain Raptor Program takes in injured birds of prey, and welcomes visitors interested in their rehabilitation and release. Want a free ride? The Fort Collins Bike Library loans bicycles to visitors and residents, from one hour to seven days, at no charge.
The Western Slope has plenty of charms, including being a dinosaur mecca with plenty of hands-on science, and is the heart of Colorado’s agricultural region. At the Museum of Western Colorado’s Dinosaur Journey, visitors can get up close and personal with dinosaur skeletons, a working paleontology lab and realistic robotic dinosaurs. Dedicated to “putting science in the hands of kids,” the Western Colorado Math and Science Center features interactive exhibits in biology, physics, earth and space science, and electronics. From June through October, orchards are laden with some of the sweetest harvests around: cherries, grapes, apples, plums, pears, apricots and peaches. Take an orchard tour or check out the myriad of roadside stands selling fresh produce, jams and ciders. For great biking or strolling, the Colorado Riverfront Trail winds for more than 18 miles through the city of Grand Junction’s picnic grounds, botanical garden, protected wetlands and fishing pier. Buy one/get one free passes are available for six major attractions from the Grand Junction Visitors Center. This “Map to Adventure” includes Dinosaur Journey, Museum of the West, Cross Orchards, the John McConnell Math & Science Center, The Art Center and the Western Colorado Botanical Gardens.
The town has a lively arts and culture scene, reflected by several galleries and a busy live theater schedule. Outdoors, the fun never stops; you can hike over 70 spectacular trails, have fun on a Jeep, snow-mobile or OHV tour, bike the Ridgway Area Trail System or go rock climbing, canyoneering, fishing, skiing, and hot air ballooning. Keep reading for more Colorado points of interest. Things to Do in Ouray
Brush up on your Lindy Hop and head to this one-of-a-kind ball that celebrates all things 1940s each June. A hangar at the Boulder Municipal Airport is transformed into a dance hall befitting the USO, with 1940s cars, celebrity impersonators, swing dance lessons, live music and an authentic-attire contest that’ll make you feel like an extra in “Casablanca.” 
A classic Colorado city just up the road from Denver, Fort Collins is a great spot for a weekend trip in Colorado. The historic college town is artsy and vibrant with plenty to do. Whether it’s bringing the kids to the Museum of Discovery, hiking and kayaking at Horsetooth Open Space, perusing Old Town shops, or biking to Fort Collins’ many craft breweries, there’s something for everyone.
Located only a 30-minute drive from Denver, Boulder holds its own with its abundance of lush parks and beautiful landscapes. A city with a hippie-like vibe, visitors who explore this area will be delighted to discover an array of shops, breweries and cafes. In addition to its thriving arts and cultural attractions, visitors can lace up their boots and head to the trails at Boulder Creek Path, Eldorado Canyon State Park and the Flatirons. Home of the University of Colorado, plenty of restaurants and drinking establishments are available to choose from, while visitors who are looking for a place to relax can also have a spot of tea at the Celestial Seasonings Tea Factory.
Brian and I descended back to ~7,000 feet for dinner in a small-town Indian restaurant in Nederland, Colorado, west of Boulder. By then, both our heads ached like a bad hangover, and my lungs literally burned when I tried to inhale anything but shallow breaths. Add generalized joint pain, and I had a full-blown case of altitude sickness. Given that I am a noted hypochondriac, I expected the worst.
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