If playing in a giant sandbox appeals to you, the Great Sand Dunes National Park and Preserve near Alamosa is a must-visit. This giant dune field of 30sqmi (78sqkm) features at least one dune that’s more than 750ft (229m) high. Sledding down the dunes is a popular pastime, as is hiking and camping. There are also horseback riding trails and the scenic four-wheel drive on Medano Pass.
The Annual Flower Trial Garden is a devoted horticultural research garden on the campus of Fort Collins' Colorado State University, open to the public throughout the year near the campus' Center for the Arts. The garden strives to serve as a trial space for the performance of annual plant cultivars in the region's high-altitude Rocky Mountain environmental conditions, with primary annual plantings on display between late May and mid-October. Plant varieties are grouped by genus and arranged by color, with more than 1,000 different cultivars typically on display each year. In addition to the main annual showcase, the garden also presented an annual pansy display, which is planted in fall and on display through the early spring. Perennials cultivated by the garden are also on display year-round across the street from the garden facility.
Mesa Verde (green table in Spanish) is located in southwest Colorado. The area was deemed a national park in 1906 by Theodore Roosevelt. It is a gorgeous national park and World Heritage site that preserves ancient Puebloan cliff dwellings, and is an ideal destination for history and nature lovers alike. Grab your walking shoes and bring your camera when you visit Mesa Verde.