within five years. >> within the last five years? >> yeah. >> wow. if i were from detroit, would i be eating this with my hands or with a fork? >> probably with your hands. >> that's delicious. the one straight ahead with the green roof. >> the building completely empty. >> empty. unbelievable. >> the white one is being rehabbed. there's money coming in. the one next to it on the right is completely empty. this is 140 square miles. so you're going to get tall grass. it's back to the wild. >> it is one of the most beautiful cities in america. it speaks of those industrial dreams of an endlessly glorious future. the people who built these structures, they were thinking big. >> they were. >> they were looking at a new rome. and they built it, actually. it's awesome here. i started doing this late in life. i'm just too old and too mean,