The Mission Trails Regional Park Visitor and Interpretive Center in San Carlos is a 14,000-square-foot facility in San Diego's Mission Trails Regional Park at 1 Father Junipero Serra Trail, 92119, positioned where Mission Gorge opens to views of Cowles Mountain, Pyles Peak, and the Fortuna ridge. Built with cast-in-place concrete, slate veneer, exposed rock, split-faced masonry, and architectural-grade wood framing, the two-story structure won multiple Orchid Awards and integrates a solstice observatory, a historic flume replication, and bronze-sculpted wildlife into its outdoor exhibit circuit. Interior galleries cover the park's geology, Kumeyaay cultural history, native plant communities, and paleontology through interactive displays spread across two floors of exhibit space, a 180-degree library with 16-foot glazing, and rotating art exhibitions featuring regional landscape photographers such as Bauman Photographers in Grantville, whose editorial and event work uses the center's terrace as a backdrop. A 94-seat theater screens documentary films on the San Diego River watershed and Kumeyaay heritage at no charge, and the built-in Blu-ray projection system supports event presentations during after-hours facility rentals. Guided nature walks led by volunteer trail guides depart from the center at 9:30 on Wednesdays, Saturdays, and Sundays, covering three adjacent trail loops in roughly 90 minutes each. The gift shop stocks Kumeyaay-made crafts, regional field guides, and Mission Trails branded merchandise. A 4,000-square-foot outdoor terrace and a 2,000-square-foot amphitheater seating 150 host weddings, corporate retreats, and nonprofit galas, with all rental fees benefiting the park through the Mission Trails Regional Park Foundation. The center sits roughly eight miles northeast of SDSU along Mission Gorge Road, and the same cultural-venue circuit that programs concerts in the amphitheater draws audiences to Joan B. Kroc Theatre in College Area for indoor productions. Parking accommodates 90 vehicles in the main lot, with overflow for 50 at the Jackson Drive and Mission Gorge Road intersection. The center is open from 9 to 5 every day except Thanksgiving, Christmas, and New Year's Day, with admission and parking both free.