Torrey Pines State Natural Reserve in San Diego protects a coastal bluff where the rare Torrey pine still grows. It is one of the rarest pines in the United States, and the reserve sits above Torrey Pines State Beach, with sweeping views of the Pacific. Trails wind through sandstone canyons and pine groves, and several lead to overlooks and down to the beach. Winter and spring bring whale sightings offshore, and the reserve's visitor center offers exhibits about the trees and the coastal habitat. Entry is $12 per vehicle. Weekends are busy, so arrive early to find parking.