The work of the prominent architectural firm of Isaac H. and William M. Rapp, the 1907 building is one of only two churches in Trinidad identified as designed by the Rapp brothers’ firm.  A well-preserved example of Romanesque Revival style religious construction in Trinidad, Mount Carmel is also significant for its association with the local Italian American community. 

One of the finest residences erected in early 20th century Trinidad, the noted architectural firm of Isaac Hamilton and William Mason Rapp designed the Nichols House.  The most influential architects in Trinidad, the Rapp brothers designed many of the city’s highly significant buildings, including churches, commercial blocks, and residences.

The 1891 McCormick House is architecturally significant as a good example of a late 19th century distinctive Queen Anne style house.  The house displays the prominent features of the Queen Anne style in its steeply pitched hipped roof with lower cross gable roofs, round tower, balconies, dormers, arched window, decorative fishscale shingles, and overall discontinuity of the vertical wall plane. 

The 1925 Frank Latuda House is architecturally significant as an excellent example of an early twentieth-century distinctive Mediterranean Revival style house. Character-defining features include a red tile, low-pitched hipped roof, arched entrances, light colored brick, and original woodwork, hardware, and fixtures. The Mediterranean Revival is not a common style in Trinidad and the house is the only documented example by the prolific firm of I.H. Rapp, W.M. Rapp and A.C. Hendrickson, Architects. 

The two-story brick and sandstone Italianate style building, with its elaborate bracketed cornice, was one of the first buildings in the area to make use of the high quality sandstone from nearby quarries.  

Constructed in 1911, the First Methodist Episcopal Church is a good local example of the Romanesque Revival Style.  Its metal-clad central dome is a distinctive feature within Trinidad’s architectural heritage, as is its yellow brick construction.  Dome roofs are not often seen in Romanesque Revival churches in Colorado and red brick was the material of choice for the majority of Trinidad’s buildings.  The church reflects elements of the Romanesque Revival style as seen in its overall massing, the use of the

The 1922 church was one of the last buildings designed by the prominent Trinidad based architectural firm of Rapp, Rapp, and Hendrickson.

This 1890 Late Victorian sandstone building, sometimes described as a “medieval fantasy,” shows great attention to detail and excellent stone work.  

The 1905 Charles Emerick House is architecturally significant as an excellent example of a Mixed Style building and the 1904 carriage house for the type and method of construction.  The Mixed Style exhibited by the house combines the Gothic Revival, Late Victorian and Late 19th and Early 20th Century American Movement styles.  Because of its placement, the Gothic Revival round tower creates a character-defining dominant feature on the house’s southeastern corner of the main façade.

Constructed in 1919 to serve the growing primary school population in an expanding neighborhood some distance east of Trinidad’s center, the East Street School remained in operation for over 80 years.  The prolific architectural firm of Isaac H. Rapp and William M. Rapp, responsible for numerous commercial, religious and residential buildings in Trinidad, designed the brick building.  The Rapp brothers designed five public schools in Trinidad of which only two remain.