While Buffalo's population is obviously stagnant, and the economics of the region isn't oriented toward growth because of obvious conditions, I'm surprised about a number of things this unlikely hometown of mine offers. The Light Rail system is more subway-like of any system I've used. While its kind-of a Stubway since the line isn't too large, its actually quite effective at being a real system since the bus system integrates well.
Here's a typical Buffalo Subway station:
source:
www.buffalonewyorktourism.com
And a video:
• Video Link
source: wyliepoon