📜 Historic 16-story skyscraper in Chicago's Loop, built in two phases, showcasing a transition in architectural history.🔍 Recognized as a Chicago Architectural Landmark and National Historic Landmark, it is also the tallest load-bearing brick building ever constructed, completed in 1891 and 1893.# Why Go 🏛️ Witness a unique architectural transition from load-bearing masonry to skeleton-frame construction 🏙️ 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 🚶 Easily accessible via public transport (Jackson station of the O'Hare Blue Line)# Tips 💡 Observe the differences between the northern (Burnham & Root, 1891, load-bearing) and southern (Holabird & Roche, 1893, skeleton-frame) halves.🚇 Easily accessible via Jackson station of the O'Hare Blue Line.