Constructed in 1966 as the Professional Plaza office tower, the structure later became known around town as the “Hammer and Nail building” for its iconic neon sign—a series of hammers striking a nail at the top of its peak—and its origins as home of the Detroit Carpenters Union. Hammer & Nail pays homage to the building’s mid-century origins while restoring its famous sign to a place of prominence for all to see.