It is located at 12 Pleasant Street, in an architecturally distinguished Beaux Arts building built in 1903 with funding support from Andrew Carnegie, to which a modern addition was made in 1979.

The building is listed on the National Register of Historic Places as a particularly fine local example of Beaux Arts architecture.

The oldest portion of the building is a T-shaped masonry structure built out of Indiana limestone in 1903 to a Beaux Arts and Classical Revival design by Albert R. Ross.

The leg of the T projects forward, creating a section three bays wide and one deep, with the main entrance at its center.

These support a multi-layer entablature, above which a dentillated cornice encircles the building below its truncated hip roof.