The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

A quirky collection of outsider art made from automobile parts.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

The failure of one component toppled this entire bridge during rush hour.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Elevated freight railway turned wildly successful urban park.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.