In 1871 The Great Fire of Chicago ripped through the city leaving massive destruction in its path. As the city began to rebuild the architects pushed the envelope with new innovative structures. The Rookery Building was one of those structures. Daniel Burnham and John Root were commissioned in 1885 to design a building for the Central Safety Deposit Company. Burnham and Root’s building was inclusive of metal framing, fire proofing (can’t really blame them, right?), an elevator and plate-glass. The Rookery stood at an impressive 11 stories tall, the tallest building in Chicago at the time. The Rookery is now considered the oldest standing skyscraper in the city of Chicago.