Benjamin Henry Boneval Latrobe was an Anglo-American neoclassical architect who immigrated to the United States. He was one of the first formally trained, professional architects in the new United States, drawing on influences from his travels in Italy, as well as British and French Neoclassical architects such as Claude Nicolas Ledoux. In his thirties, he immigrated to the new United States and designed the United States Capitol, on "Capitol Hill" in Washington, D.C., as well as the Old Baltimore Cathedral or The Baltimore Basilica,. It is the first Cathedral constructed in the United States for any Christian denomination. Latrobe also designed the largest structure in America at the time, the "Merchants' Exchange" in Baltimore. With extensive balconied atriums through the wings and a large central rotunda under a low dome which dominated the city, it was completed in 1820 after five years of work and endured into the early twentieth century.

Neoclassical architecture, sometimes referred to as Classical Revival architecture, is an architectural style produced by the Neoclassical movement that began in the mid-18th century in Italy, France and Germany. It became one of the most prominent architectural styles in the Western world. The prevailing styles of architecture in most of Europe for the previous two centuries, Renaissance architecture and Baroque architecture, already represented partial revivals of the Classical architecture of ancient Rome and ancient Greek architecture, but the Neoclassical movement aimed to strip away the excesses of Late Baroque and return to a purer, more complete, and more authentic classical style, adapted to modern purposes.