The Classical treatment of the Hamilton set a new trend in commercial construction for Portland, which coincided with a trend seen in the U.S. and throughout the world. Indeed, the Chicago World's Fair (The World’s Columbian Exposition), held from May 1 until October 30 of 1893, arguably set the tone for Greek revival architecture's heavy influence on the world for the following thirty years. Daniel Burnham, a Chicago architect integral in the design of the modern skyscraper, led a team of World’s Fair architects who designed the World's Fair pavilions consisting of classic temples that resembled those seen in ancient Greece and Rome. The Hamilton arrived that same year, in 1893, with that same Classical Greek appearance. However, it is important to understand that the Hamilton's design and construction began prior to the Chicago World's Fair. Thus, the trend towards Classic Revival was in motion just as the Hamilton was conceived.
While banks, government buildings, and museums often enjoyed the full Greek-treatment, with lavish columnns and immense ornate detail, commercial buildings tended to be less gaudy, allowing for more function. The Hamilton, compared to buildings on the same block, looks more simple upon first look, but the columnns at the building's base show Greek influence. As well, the move towards commercial building and, eventually, Chicago School skyscraper design was already being seen in buildings such as the Hamilton.