Cheyenne Mountain Library will be closed until further notice due to extensive plumbing repairs outside the building.

Fountain Library Open House

Event Type:

History & Genealogy

Age Group:

All
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Event Details

https://www.historycolorado.org/colorado-150

Sesquicentennial. Semiquincentennial. Sesquisemiquincentennial. 

In 2026, the United States will mark the 250th anniversary of the Declaration of Independence—our nation’s semiquincentennial. At the same time, Colorado will mark the 150th anniversary of our entrance into the Union—our state’s sesquicentennial. As the Centennial State, Colorado is the only one who will observe twin anniversaries—our Sesquisemiquincentennial.

As we celebrate this uniquely Colorado commemoration, we invite you to pause, reflect upon, and honor Colorado’s shared history as we imagine our future together through community events, educational opportunities, statewide celebrations, and more.