11th-century Pueblo ruins, historical buildings and museum. Initial builders and occupants, referred to as the Primary occupation, were colonists from or had very close ties with the inhabitants of Chaco Canyon.

Salmon Ruins is named for George Salmon who homesteaded the property in the late 1800s. His family protected the ruin from vandals and treasure hunters for more than 90 years. His homestead and outbuildings remain standing near the ruin. In 1957, Charles Dustin purchased the property and also provided protection for the site. In 1964, a group of local citizens formed the non-profit corporation known as the San Juan County Museum Association. Its mission was, and is today, to preserve the historic and prehistoric resources of the Four Corners Area of New Mexico and make them more generally known to the public. The Museum Association, in 1969, acquired the 22-acre tract of land that contained the ruins and the Salmon Family homestead. San Juan County followed suit with the final purchase, and the Association operates the facility under a lease agreement. The Salmon Ruins Museum opened to the public in 1973 and has been managed by the Association since that time. The site was placed on the New Mexico State Register of Cultural Properties and the National Register of Historic Places in 1970. In 1990, Heritage Park at Salmon Ruins was completed. The Park, greatly utilized by area schools, recognizes the many cultures which have contributed to the colorful history of San Juan County, New Mexico, via a series of reconstructed habitations and outdoor exhibits.