This mosaic, created with images from Google Maps Street View, shows one of the many enormous challenges facing Detroit as it tries to climb out of debt. In January 2014, the owners of these properties collectively owed the county more than $328 million in unpaid taxes and fees. Since then, some have paid their debts, entered in payment plans or qualified for assistance. But 26,038 properties, shown with a, remain in jeopardy, and many are headed for public auction.