The Art of Abandonment: Buffalo's Pump Station. In the early 1900's these five story-high steam pumps could push out 30 million gallons of water from Lake Erie into the City. Today the pump station is a rusty ornament, now replaced by small electric pumps.
It's amazing that in a relatively short span of time Pittsburgh's mills and blast furnaces built an entire city and then broke every man in it. Carrie Furnace is only accessible in advance through the organization that owns it. They've left it as is (thank God) and intend to keep it stable enough to last as an industrial museum.