For purple mountain majesties…
Jenny Chang / BuzzFeed
Maroon Lake and Maroon Bells, near Aspen
Supposedly, these two mountains are the most photographed peaks in North America.
Geoff Llerena CC BY-NC-ND / Via Flickr: jeffrt
Hanging Lake, in Glenwood Canyon
The clear turquoise lake and hanging gardens are all part of a fragile ecosystem, though, so you can't bring dogs or swim. Read more about visiting here.
Bryce Bradford CC BY-NC-ND / Via Flickr: brb_photography
The Great Sand Dunes, near Crestone
While the dunes aren't ~on a mountain~, there are stunning views of mountains…as well as sand dunes, tundra, forests, and lakes to explore. Read more about the park here.
David Wynia CC BY-NC-ND / Via Flickr: davidandbecky