188 S. Main Street was constructed in 1907 on the site where it remains today. It sits in the mid-block of the main commercial core (Main Street) of Elizabeth, CO. The building is oriented to the West and faces Main Street. The building is a single-story structure, rectangular in plan with a flat roof.

Listed originally in 1984, the Castle Rock Elementary School building, (5DA.342,
NRIS.84000827) was listed under Criterion C for its architectural significance. The resource’s rhyolite
construction of local material and architectural style contributed to its prominence within the town.

The 655 Broadway Building is located one and a half miles south of downtown Denver on a 0.74-acre trapezoidal site at the southwest corner of Broadway and Speer Boulevard. The building is situated at the northeast corner of the property and is a ten-story, International-style office tower with two below-ground levels.

An important site in the educational history of Denver, South High's Italian Renaissance Revival style building is also significant for its magnificent architecture, playful sculpture, and elegant murals.

The Soldner Home and Studio is a nationally significant place for its association with the life and work of renowned American ceramic artist Paul Soldner, known as the “Father of American Raku” for the Japanese-inspired ceramic technique he pioneered in 1960.

The Florence High School is significant for its contribution to education in the City of Florence. The resource reflects significance in the area of education as a representation of an early-twentieth century high school that remained in service of its community for almost a full century first as a high school and later as a junior high school. The resource reflects significance for its representation of the Classical Revival  The and Modern Movements architectural styles.

The Centennial House is significant for its use as a waystation in Golden Gate Canyon between Golden and the historic mining bonanza that occurred in Central City and Black Hawk in the latter half of the nineteenth century. For over a decade, the Centennial House was a frequently visited stopping point and an integral part of the Golden Gate Canyon journey. Centennial House provided a respite for travelers along the canyon’s Gregory Toll Road who used the popular waystation for a meal, accommodation, or rest for their animals.

The 1906 Yellow Creek Schoolhouse merits inclusion in the Colorado State Register of Historic Properties as a representative of rural schools in Rio Blanco County during the first half of the twentieth century. It served as the education center of school age children of the northern Rio Blanco County area for nearly forty years. Similar to other rural schools, the Yellow Creek Schoolhouse building also served as a social center for local residents, likely including families with pupils as well as those without children.

The Bachelor-Commodore Mine Complex is significant for its association with the mining industry that created enormous wealth for its investors, promoted the settlement of the town of Creede and Mineral County, contributed to the local growth of dependent industries, such as farming and ranching, and evolved to encompass changing processes and labor practices. The Bachelor and Commodore mines were two of the biggest producers of ore within the Creede Mining District, then later, when their workings and output were combined, they had the most productive years of all the Creede-area mines.

The Scott Apartments and Garage at 900 S. College Avenue represents Fort Collins’ adaptation of a new type of residential housing: the commuter-friendly apartment building, aimed at working class professionals. While there is no attributed architect, Gustav Edwin Lundborg probably designed the building. Prolific Fort Collins-based contractor Herman Schroeder was the contracted builder. The company aimed to cater to middle and working class Fort Collins residents during a population boom for the city.