The Pierre Shale formation was deposited during the Paleogene and Cretaceous periods about 70 million years ago. The region was covered by a deep sea—the Cretaceous Western Interior Seaway—which deposited massive amounts of shale on the seabed. Both the thick stratum of shale and embedded marine life fossils—including ammonites and skeletons of fish and such marine reptiles as mosasaurs, plesiosaurs, and extinct species of sea turtles, along with rare dinosaur and bird remains—were created during this time period. The area now known as Colorado was eventually transformed from being at the bottom of an ocean to dry land again, giving yield to another fossiliferous rock layer known as the Denver Formation.[58]
The Pierre Shale formation was deposited during the Paleogene and Cretaceous periods about 70 million years ago. The region was covered by a deep sea—the Cretaceous Western Interior Seaway—which deposited massive amounts of shale on the seabed. Both the thick stratum of shale and embedded marine life fossils—including ammonites and skeletons of fish and such marine reptiles as mosasaurs, plesiosaurs, and extinct species of sea turtles, along with rare dinosaur and bird remains—were created during this time period. The area now known as Colorado was eventually transformed from being at the bottom of an ocean to dry land again, giving yield to another fossiliferous rock layer known as the Denver Formation.[58]
Brown’s Canyon National Monument – It’s one of Colorado’s newest national monuments, and also one of it’s most beautiful. A pristine, natural canyon, Brown’s Canyon offers visitors the opportunity to hike, raft, or camp in the headwaters of the Arkansas River. Towering ponderosa pine trees and monolithic boulders greet you along this amazing stretch of white water. We may be biased, but we think the best way to see it is by raft. There is also fantastic camping along the river at various locations. Browns’ Canyon is also close to the small town of Nathrop, which offers a number of hot-springs resorts that are perfect for relaxing after a day of adventuring, including Antero Hot Springs Cabins, Mt. Princeton Hot Springs Resort, and Cottonwood Hot Springs.
Depending on when you choose to stay in an Estes Park vacation rental, you may be able to catch family-friendly events like the annual Teddy Bear Picnic or Longs Peak Scottish-Irish Highland Festival. If you aren't able to make it to those events, don't worry: you can always pick up some local history at the Lula W. Dorsey Museum or Stanley Steam Car Museum. Visit the local shops and galleries like the Wild Spirits Gallery or Alpenglow Images & Accents to see some local photography, woodworking, jewelry, and other crafts or pick up a souvenir or two for friends and family back home.
Greeley is conveniently located just 50 miles from Denver in one of the top agricultural areas of America, which is great news for foodies. You can visit various breweries, buy farm-fresh produce at the farmers’ market and dine farm-to-fork style at many restaurants in the bustling Greeley Creative District, which includes several historic buildings that now house galleries, museums and entertainment venues.
In the shadow of Great Sand Dunes National Park and Preserve, the quirky town of Hooper sits atop a natural artesian hot spring, with water flowing year-round into the family-friendly Sand Dunes Pool. On the same property, The Greenhouse is an all-indoor, all-adult oasis with three small soaking tubs and a 10-by-75-foot zero-entry pool. The Greenhouse also has a 10-person sauna, indoor gardens and an onsite bar to help you stay even toastier. 
There are more activities, events, vacation opportunities, and fun things to do in Colorado than you can imagine. Vacations in Colorado can mean hot air balloon rides, jeep, ATV, motorcycle or bicycle rental or tours, snowmobile, sleigh rides, dog sledding, fly fishing for rainbow, brown and brook trout, sailing, jet-skiing, water skiing, boating, kayaking or canoeing (rentals, equipment, instruction, guided tours and floats), or get wet and wild whitewater rafting, tubing, skiing, snow shoeing, and cross country skiing (check out our ski areas, rentals and tours), horseback riding, hiking, bicycling, rock climbing, upland bird hunting, big game hunting for deer, elk, moose, antelope, bear, mountain lion, mountain goat, big horn and dall sheep. Come experience the beauty of our mountains and our western hospitality on your Colorado vacations.
Escape from the city with a romantic getaway just 30 minutes west of Denver to the Highland Haven Creekside Inn in Evergreen. This family-owned and operated Colorado Mountain B&B will charm you upon the moment of entering the wooded grounds. Their website describes it as an opportunity to create your own “Colorado Woodland Fairytale.” And it is that adorable. Rustic. Quiet. Charming. And far enough away from it all to feel like a romantic getaway.
Smith Fork Ranch is a traditional homestead within the Rocky Mountains and rolling meadows of Colorado featuring old-fashioned Western hospitality and sophisticated wine and cuisine. The cozy mountain lodges envelop guests in homely comfort with plush furnishings, wood burning fireplaces, original artwork, slate tiled bathrooms, handmade soaps and organic lotions, feather beds with fine linens, and hot tubs. The undulating landscape is teeming with wildlife and offers superb hiking, while activities on the ranch will keep honeymooners busy the entire stay.
That was not my intention. We planned a trip from Florida to the Rocky Mountains of Colorado for one of my freelance writing projects, and originally scheduled a day in Denver (at 5,280 feet in elevation) to acclimate. Frontier Airlines had a different idea. I heard alternatively that our plane had a mechanical issue, that weather in the Midwest grounded the flight, and that the crew went on strike. Regardless, the airline cancelled our original flight.
Nestled below Colorado's radiant mountaintops is beautiful Lazy R Cottages in Estes Park. Just one mile from Rocky Mountain National Park, we offer one-, two- and three-bedroom cabins perfect for romantic escapes and family vacations. Our cabins have kitchens or kitchenettes, fireplaces, decks with mountain views, and some with personal hot tubs … perfect for relaxing after a day enjoying Estes Park and the National Park. Dog-friendly units available ($15 per dog/per night). Free Wi-Fi. View more about our Estes Park cabins.
Keystone is the ultimate year-round outdoor playground. Families will discover a wealth of things to do to keep the kids, and themselves happy, with everything from a Kidtopia Play Park, Keystone Science School Day Camps and the summer snow tubing hill to stand up paddle boarding and boating on the lake, miniature golf, GPS Geo-Cache Adventures and dinner wagon rides. Then there are the festivals, like the Model Boat Regata, the Snake River Festival, and Cirque D’Wheels. If you stay at Keystone Resort, the Kidtopia Children’s Theatre hosted in the Quaking Aspen Amphitheatre is free every Friday.
