A lot of us have thought about pimping our house with secret tunnels and doorways, but constructing 950 doors to nowhere? Get the ins and outs of covert passageways throughout the ages from last night's episode of Modern Marvels.

Modern Marvels brings you everything you wanted to know about fork making from the last American flatware factory. You'd think America would be lousy with fork factories, but no. Curse you, food lift!