7 Abandoned Wonders of the United States (Part II)

The seven American abandoned wonders (part one) have been introduced last time, and this is the second part. Some of these abandoned buildings have existed in the center of famous cities such as New York and Los Angeles for more than 10 years or even nearly a century. Would you wonder why these so delicate and magnificent buildings be abandoned? Zoos, steel mills, prisons, offices... Let's take a look at another seven American abandoned wonders.