📜 Imposing 16-story high-rise in Chicago's South Loop, a landmark of architectural transition. 🔍 Recognized as a Chicago Architectural Landmark and National Historic Landmark, it is also the tallest load-bearing brick building ever constructed, completed in two phases (1891, 1893).# Why Go🏛️ Witness a pivotal moment in architectural history, from load-bearing masonry to skeleton-frame construction.🧱 Admire its unique two-half design and innovative masonry, including early examples of electricity, fire-proofing, and aluminum.🏙️ Explore one of the world's tallest commercial buildings with load-bearing masonry walls and innovative features like ornate aluminum staircases.📸 Admire its distinctive stripped-down facade and undulating bay windows.🏆 Recognized as a Chicago Architectural Landmark and National Historic Landmark.# Tips💡 Observe the differences between the northern (Burnham & Root, 1891, load-bearing) and southern (Holabird & Roche, 1893, skeleton-frame) halves.📍 Located at 53 West Jackson Boulevard, easily accessible via Jackson station of the O'Hare Blue Line.🏢 Houses various independent professional firms.