You can’t talk about Chicago blues without talking about Muddy Waters. His talent shaped the genre, and fostered a community of legends like John Lee Hooker, BB King and Chuck Berry. So for the latest in our "What's That Building?" series, architecture sleuth Dennis Rodkin takes us to Mojo Museum, the 19th century two-flat in Kenwood that was Muddy Waters' longtime home and rehearsal space. The sweet sounds of blues still ring throughout the area today during monthly backyard concerts. And we’ll hear from the family member keeping the blues great’s memory alive.