Interurban No. 25 operated over the interurban rail network which provided passenger service during the first half of the twentieth century between Denver and Golden.

The diner is an exceptionally well-preserved example of prefabricated stainless steel diner construction.  Even at the time of its completion in 1957 by Mountain View Diner Inc. in Singac, New Jersey, it was a rare western example of the building type. 

The 1962 Country Club Gardens is architecturally significant as an excellent example of New Formalism architecture.

Building 710 was constructed in 1969 and is important for its association with Cold War Era military history.

The Bonfils-Stanton Belmar Estate Outbuildings are significant architecturally, including the caretaker’s cottage, a kit home likely manufactured by the Aladdin Company. 

Multiple sites, including camps and specialized activity sites, indicate an occupation period of about 4,000 years, from around 3000 BC through AD 1000.

The park was included in the Olmsted acquisition plan.  Jules J.B. Benedict designed the circa 1923 native stone and timber well house.  

Located west of the downtown commercial area, the district encompasses the most intact of Golden’s early residential neighborhoods.  The campus of the Colorado School of Mines is to the south and west.  The residences within the district are primarily of brick or wood frame construction and date from the 1870s to 1920. 

The ranch is associated with the settlement and agricultural development of Mount Vernon Canyon.  It is architecturally significant as the best surviving example of an original Mount Vernon Canyon ranch complex.

The circa 1880 Tallman Ranch represents part of the exploration and settlement of the area now encompassing western Jefferson and eastern Gilpin Counties.