Rising from 7,800 feet to 12,000 – even 14,000 feet in some places – RMNP is a high-elevation park and if you don't give yourself time to adjust to the thinner atmosphere and lower oxygen levels, you could run the risk of getting the headaches, nausea and disorientation characteristic of altitude sickness. Along with taking a day or so to acclimate to the high altitude, you should make sure to consume plenty of water and food to ward off symptoms. 

Denver is the capital of Colorado and it perfectly reflects the diversity of the state, offering visitors of all ages virtually unlimited attractions to suit all interests. You can visit several art museums, including the Denver Art Museum and the Museum of Contemporary Art Denver, and there are several art districts filled with galleries to thrill and delight all art lovers.
Summer nights are long in Colorado, and after dinner Brian and I still had time for a shoreline walk around the Barker Reservoir, rimmed by mountains and fed by a cool and clear river. I took photos of the baby Canada Geese near shore, a speck of black in the middle of the water that turned out to be a cormorant, a hummingbird settled against a tree branch, while Brian cast a line. But I really didn’t want to move.
Rocky Mountain National Park is one of the highest national parks in the nation, with elevations from 7,860 to 14,259 feet (2,396 to 4,346 m),[30] the highest point of which is Longs Peak.[31] Trail Ridge Road is the highest paved through-road in the country, with a peak elevation of 12,183 feet (3,713 m).[32] Sixty mountain peaks over 12,000 feet (3,658 m) high provide scenic vistas.[30] On the north side of the park, the Mummy Range contains a number of thirteener peaks, including Hagues Peak, Mummy Mountain, Fairchild Mountain, Ypsilon Mountain, and Mount Chiquita.[33] Several small glaciers and permanent snowfields are found in the high mountain cirques.[34]
Stay up past your (kids’) bedtime at this grown-ups-only urban retreat that fuses art and sustainability. Side-by-side Victorian homes sit on the edge of downtown Denver, putting you close to the city’s vibrant dining and nightlife. Many rooms feature murals or paintings by local artists, so you can soak up some culture from your in-room whirlpool tub. There are eco-friendly perks throughout, like organic toiletries and gardens where the onsite chef grows herbs and veggies for your complimentary breakfast.
The park's climate is also affected by the Continental Divide, which runs northwest to southeast through the center of the park atop the high peaks. The Continental Divide creates two distinct climate patterns - one typical of the east side near Estes Park and the other associated with the Grand Lake area on the park's west side.[49] The west side of the park experiences more snow, less wind, and clear cold days during the winter months.[49]
The Experience: As you can tell by looking at this meadow of wildflowers, Crested Butte is a beautiful destination. In the summertime, you can paddle-board, fly-fish, rock-climb, hike, mountain-bike, and laze around the river. If you prefer a little more direction while exploring a new place, stay at the Sopris House or Scarp Ridge Lodge, both of which are run by Eleven Experiences, a company that marries upscale lodging, gourmet dining, and curated itineraries with hospitable experts guiding you throughout your entire stay.
Explore the nearby great outdoors at the Horsetooth Mountain Open Space or get your adrenaline pumping by rafting on Cache La Poudre River with the Mountain Whitewater Descents Company. Visit Global Village Museum of Arts and Cultures to learn about folk art from all over the world. Take the kids to the Farm at Lee Martinez Park to learn about the farm life and play with baby farm animals.
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