Pecos preserves 12,000 years of history including the ancient pueblo of Pecos, two Spanish Colonial Missions, Santa Fe Trail sites, 20th century ranch history of Forked Lightning Ranch, and the site of the Civil War Battle of Glorieta Pass. The ruins trail, picnic area, and visitor center are the only areas currently open to visitors at this time. Closed areas such as the Forked Lightning Ranch, the Santa Fe Trail, and the Civil War Battlefield of Glorieta are available only through ranger guided tours.
Leashed pets are permitted in the park, but are not allowed in the buildings. Leashes must be no longer than six feet.