When it was constructed in 1886 it was the city's first example of Richardsonian Romanesque style, and it stands as an early work of architect Oliver G.

[2] The Wirth Building was listed on the National Register of Historic Places in 1991 for its local significance in the theme of architecture.

[3] It was nominated for being a leading local example of its architectural style and a key turning point in the career of an important Duluth-based architect.

Wirth's brother George happened to be one of Minnesota's best-known architects at the time, and had just forged a partnership with his star employee Traphagen.

[2] Shortly after the building was completed, Wirth moved back to his native Bavaria while Traphagen remained in Duluth and became its premier architect.