Where a staggering 747 ships were constructed during World War II.

A flooded Mexican cave that hides a river beneath the water.

A former zoo turned public park, where visitors can hang out in the old animal cages.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

The grave of Mary Nasson is shrouded by witchy legends.

A museum dedicated to "science, history and the arts" little changed since 1915.

This massive solar system model is sprawled out across Maine's suburban wilderness.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Final resting place of two dozen New York City harbor ships.

Memorial to the 137 lives lost on a ship fire, the whole hulk of which washed up on the Asbury Park shore.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

The site of one of history's most indelible and horrific tragedies.

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

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The highest peak in the state of Vermont has some interesting features.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

This replica of the Greek structure is in the heart of Nashville.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

America's oldest archaeological site or a muddled case of wishful thinking.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.