The Stewart's Department Store structure was designed in 1899 by Charles E. Cassell and is a six-story brick and terra cotta steel-framed building detailed in a highly ornate Italian Renaissance Revival style.

It features an exuberant ornamental detail includes fluted Ionic and Corinthian columns, lion heads, caryatids, wreaths, garlands, cartouches, and an elaborate bracketed cornice.

[2] The Stewart's Department Store Building was listed on the National Register of Historic Places in 1999.

While many of Baltimore's downtown department stores during the 19th and early 20th centuries were founded by German-Jewish immigrants, Stewart's was a non-Jewish owned department store, although the original founders Samuel and Elias Posner were Jewish.

Built on two levels and surrounded by parking, the store was designed to “blend into the suburban area around it.” The design included broad expanses of glass from floor to ceiling, “screened by Fiberglas curtains containing 600 square yards of materials.” Elaborate murals of Homewood House, the Washington Monument and the Federal Hill skyline decorated walls in the store, and a restaurant with a Chesapeake Bay theme became a destination for northern shoppers.