English: Plaque for the Chicago Fire Landmark. Plaque transcribed below.

Chicago Landmark

Site of the Origin of
the Chicago Fire of 1871

The great Chicago fire began October 8, 1871, in the
O'Leary barn on DeKoven Street. Fanned by a strong
wind, in a city largely built of wood structures, the
blaze raged for nearly 30 hours. Flames spread as
far north as Fullerton Avenue, before finally dying
out in the early morning rain, Tuesday, October 10.
Almost anything in the path of the fire had been
destroyed.

Designated a Chicago Landmark on September 15, 1971
by the City Council of Chicago.
Richard J. Daley, Mayor
         Commission on Chicago

Historical and Architectural Landmark