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The 500 North Water Street Building is a seven-story tall building constructed in Richardsonian Romanesque Revival architectural style in approximately 1892. This building has a heavily rusticated stone base with a granite column and a turret at the south-west corner. Five stories of brick masonry topped the two-story base of red rock-faced sandstone. Listed in The National Register of Historical Places in 1986.

PE designed stairs, elevator shafts, HVAC support platform, glass canopy, entry gate, and both exterior and interior alterations. In addition to alteration design, PE was involved in façade rehabilitation, sidewalk vault stabilization, and basement upgrading for pool designs.