Mile‑High 13th Step at Colorado State Capitol

The 13th step of the Colorado State Capitol in Denver is marked to denote one mile (5,280 feet) above sea level and is a long-standing local landmark and photo spot. The marker is located on the exterior/main steps of the Capitol and is referenced in many tourist guides and official Capitol information. Modern geodetic datums and precise surveys have adjusted elevation measurements over time, a point sometimes noted when comparing the traditional marker to current surveyed elevations.