[Answer] This U.S. Rockies destination outside Colorado Springs is where the grasslands of the Great Plains meet the pinon-juniper woodlands of the American Southwest and merge with the forest of 14,115-foot Pikes Peak mountain.

Step 1 : Introduction to the question " This U.S. Rockies destination outside Colorado Springs is where the grasslands of the Great Plains meet the pinon-juniper woodlands of the American Southwest and merge with the forest of 14,115-foot Pikes Peak mountain. "

...1. Garden of the Gods 2. Manitou Cliff Dwellings 3. The Cave of the Winds 4. Angels Landing