Ghost Ranch, Retreat center and National Natural Landmark in Rio Arriba County, United States.

Ghost Ranch is a 21,000-acre retreat and education center in Rio Arriba County, about 14 miles from Abiquiu. Its eroded slopes of red, orange and rust rock rise to a pale tan cliff line, with a narrow reddish spire on the left. The Rito del Yeso runs through the canyons and gorge, and the Presbyterian Church (USA) owns the land, leased to The National Ghost Ranch Foundation.

Ghost Ranch lies within the Piedra Lumbre land grant, issued in 1766 by King Charles III of Spain to Pedro Martin Serrano. In the 1880s the Archuleta brothers built jacal homes in the canyon and ran stolen cattle through its streams. Roy Pfaffle won the deed in a 1928 poker game; his wife Carol Stanley named it Ghost Ranch and opened a dude ranch. Arthur Pack donated it to the Presbyterian Church in 1955.

The center hosts year-round workshops in art, writing, and spiritual development while maintaining connections to Native American and Spanish colonial traditions. These programs attract artists and writers from different places who benefit from the inspiring surroundings and exchange with others.

Accommodation options include lodges, camping sites, and dining facilities, allowing visitors to choose based on their preferences. Year-round programs and activities run throughout the site, so it helps to check available offerings before visiting.

The property contains a major paleontological site where scientists discovered nearly one thousand fossils of the dinosaur Coelophysis. This collection makes it an important location for understanding prehistoric life in the region.