Dense, historical, and not very wealthy cities in Europe look like this. IMHO it’s not awful, it’s just not what very very rich cities in the west look like.

The reality is that Detroit’s GDP is roughly $200 Billion per year, which is also roughly the GDP of all of Greece (and like 10x Athens).

Americans often have a pretty skewed impression of how wealthy (or not) other countries are based on non-economic metrics like high crime in inner cities.