National Geographic has quite a map showing Detroit with each block coded to be more or less less a traditional neighborhood or an urban prairie/naturescape. Here is the map:

The map clearly shows clusters of both kinds of places, which contradicts the idea (reinforced by numerous stories and images) of recent years of a monolithic empty Detroit. As the text at the bottom left notes, “Many neighborhoods along Detroit’s perimeter are as densely populated as the city’s wealthier suburbs.” So it isn’t that all of Detroit needs fixing; neighborhoods that suffered from similar issues including deindustrialization, the loss of white residents, the lack of capital both for businesses and residents/homeowners, and crime do need the attention.