The Historic Callahan House and Garden at 312 Terry Street is hosting an Open House with tours from 4 to 8 pm on Saturday, May 20. Admire works created by local artists while you enjoy live music in the garden. Admission is free and the public is welcome. For more information about the Callahan House, including rental options for weddings, special events and parties, visit LongmontColorado.gov/Callahan.