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The Great Chicago Fire (pictured), began and proceeded to destroy much of the city's central business district, killing 300 people and leaving 90,000 others homeless.
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Great Chicago Fire
1871 conflagration in Illinois, US
The Great Chicago Fire was a conflagration that burned in the American city of Chicago, Illinois during October 8–10, 1871. The fire killed approximately 300 people, destroyed roughly 3.3 square miles (9 km2) of the city including over 17,000 structures, and left more than…Source: Wikipedia (CC BY-SA)
Central business district
Commercial and business area of a city
A central business district (CBD) is the commercial and business center of a city. It contains commercial space and offices, and in larger cities will often be described as a financial district. Geographically, it often coincides with the "city centre" or "downtown". However,…Source: Wikipedia (CC BY-SA)