Fluky's - Niles
This concession inside Wal-Mart is the last vestige of the business widely acknowledged as the originator of the Chicago-style hot dog, created by Abe "Fluky" Drexler at the Maxwell Street market in 1929. Today, they serve a proprietary skinless hot dog, but they still pile on all the traditional fixings.
Read more about Fluky's in "Eat this! The Chicago hot dog, born in the Great Depression."