2026 marks America’s Semiquincentennial (250) and Colorado’s Sesquicentennial (150) birthdays! On July 4th, 1776, the Declaration of Independence was signed in Philadelphia. A century later, on August 1, 1876, Colorado—the “Centennial State”—became the 38th state.
Aspen Historical Society is joining organizations around the nation to celebrate this collective history throughout 2026, marking an historic milestone while also inviting Coloradoans, and every American, to think about the future.
Join us to celebrate the past with a pop up display, special events, and a new video series! More information below: