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The LDDA office will be closed Thursday June 19th for the Juneteenth Holiday.

Summer Open House

Category: Event Calendar

Date and Time

Location

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Details

Summer Open House

Thursday, July 24, 2025, from 5:00pm – 7:00pm
Free and open to the public. No registration required.

Learn about local history at one of Longmont’s most treasured historic sites. Self-tour through Callahan House with handouts and historical information provided.

At the Open House:

Learn how you can make an impact! Callahan House is offering a new program with opportunity for individuals and organizations to take a special role in supporting preservation and restoration of this historic gem in the heart of Longmont.