Built in 1910, it is the largest depot constructed by the San Luis Southern Railway, a 32-mile standard gauge railroad built to serve the towns and farms planned by the Costilla Estates Development Company.

As the oldest continually used non-Native American religious space in Colorado, Capilla de Viejo San Acacio is significant for its Hispanic Heritage beginning in 1850. 

As one of the best intact examples of vernacular Queen Anne architecture in Louisville, the property illustrates the modest housing erected by local coal miners during the early 20th century. 

The house is one of the best intact examples of the Queen Anne style as applied to miners’ housing remaining in Louisville. 

Erected as a company store for the National Fuel Company, one of the largest mining concerns in Louisville, it is the building most symbolic of Louisville’s heritage as a coal mining town. 

Capilla de San Isidro is eligible in the area of Ethnic Heritage: Hispanic from 1894 to 1963 and in the area of Architecture for ca. 1894 and ca. 1940 at the local level of significance.

The tavern is one of the few historic commercial structures in the community retaining physical integrity. 

The house is one of the few residences in the community retaining its original outbuildings, making it an important example of a late 19th century urban residential complex.

The building is a well-preserved example of a neighborhood grocery.  

The Garcia School is one of only a few adobe buildings remaining in what was once Plaza de los Manzanares, a settlement in the San Luis Valley dating to 1849.