Mestizo Hybridity — Tony Ortega. Firehouse Art Center, 667 4th Ave., Longmont, 303-651-2787. Through Aug. 11.
Chief Niwot: Legend & Legacy. Boulder History Museum, 1206 Euclid Ave., Boulder, 303-449- 3464. Through Nov. 25.
David Mayhew — Landscape photography. Boulder Arts and Crafts Gallery, 1421 Pearl St., Boulder, 303-443- 3683. Through Sept. 2.
Simply — A juried photography exhibit. The Center for Fine Art Photography, Art Center of Fort Collins, 400 N. College Ave., 970-224-1010. Through July 28.
Farewell — The Photography of Christopher Allen. Dona Laurita Fine Art Photography, 820 Main St., Louisville, 303-818-1616. Through July 31.
Feeling the Heat. The Muse Gallery, 356 Main St., Longmont, 303-678-7869. Through Aug. 25.
The Ghosts of Auschwitz-Birkenau. The Dairy Center for the Arts, 2590 Walnut St., Boulder, 303-440-7826. Through July 27.
Visual Rhythm. Boulder Museum of Contemporary Art, 1750 13th St., Boulder, 303-443- 2122. Through Sept. 9.
