Denver's capitol has a 24-karat gold dome, and its front steps mark exactly one mile above sea level.
Why it matters
You can stand on the actual mile-high step. Free, and a genuinely fun photo.
Nearby in Colorado
United States Air Force Academy
Colorado Springs, CO
Mesa Verde National Park
Mesa Verde NP, CO
Wings Over the Rockies Air & Space Museum
Denver, CO
United States Mint at Denver
Denver, CO
Molly Brown House Museum
Denver, CO
Fort Logan National Cemetery
Denver, CO