On this week's What's Ruining Our Cities: Locks are the key to Paris's downfall and tires are popping up in the most unexpected places in Detroit. Plus, a new exhibition is focused exclusively on ruined cities—and the designers that work to save them.
If you're going to Washington D.C. before September 3, you can't miss the Lego Architecture exhibition at the National Building Museum. They just added three new iconic buildings to the 15 already in existence. They are huge!