No, it's not a real place you can find on a map. We made it up — while jogging. But the South City Rehab District is hereby christened. It's around south city where cool old houses are being made even cooler: Cherokee Street, Benton Park, Soulard, Lafayette Square. You know: red brick, gardens, maybe even some city chickens. You can run these neighborhoods contiguously and eyeball gorgeous architecture, which makes the miles fly by. Stop in Tower Grove Park or Lafayette Park to drink some water and use a porta-potty. Gawk at the unbelievably fancy houses off of South Compton Avenue on Longfellow and Hawthorne boulevards. Pick your own route and avoid the hordes on Rollerblades and bikes — we're looking at you, Forest Park.