[1] The original section of this structure was designed by the architectural firm of Cope & Stewardson and built in 1902, for the Lukens Steel Company.

It is a 2+1⁄2-story, seven-bay, brick, T-shaped building in a Colonial Revival/Georgian Revival style.

It has a hipped roof with dormers and flanking two-story, three-bay wings.

[2] A duplicate of the original structure was added in 1916, making it an H-shaped building.

[2] Today, the building is home to the National Iron & Steel Heritage Museum and other local businesses and organizations.