The Mercer County Courthouse in Princeton, West Virginia was built in 1930–31 in the Art Moderne style.

Designed by Alex B. Mahood, it is the most significant example of the style in southern West Virginia.

[2] It was listed on the National Register of Historic Places in 1980.

Although designed and built with entrances on all four sides, due to the security issues of today, the public can only enter through the north door.

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