Illegal drag racing two stories beneath Chicago’s streets.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

This historic hotel invented the chocolate brownie.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

This slice of 1960s Danish modernism does not conform to the Oxford college stereotypes.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

This huge clock made of flowers and simple machinery was once used a political weapon.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

An abandoned asylum incorporated into a college campus.

A rare particle accelerator with a tremendous energy range is tucked away at Ohio University.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

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

Its original statue was deemed so ugly, locals called it “Scary Lucy.”

A 19th-century architectural wonder designed by the "father of the skyscraper."

One of the few working locomotive roundhouses in the United States.

This public baseball field is a beloved remainder from of one of the most historic stadiums in the country.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The former broadcast site has been reimagined as a museum about the medium.

The seat of Buffalo government is a gorgeous Art Deco palace.