A unique set of caves that spits waves back out into the ocean.

No matter what the plaque under this massive legume says, this is not the world's largest peanut.

This former mining town was named the most toxic town in America.

A museum dedicated to man's boldest venture.

A kitschy, creepy St. Louis mainstay.

Less a museum than a bizarre fantasy world created by artists and engineers.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

This small-town park in southern Illinois has a 1,000,000-gallon swimming pool and a 100,000-barrel oil well.

The multinational Burger King chain is banned from operating within 20 miles of a family restaurant filed under the same name.

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

Walk in the footsteps of the famed astronaut at Purdue University.

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

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Millions of numbers carved in glass represent the tattoos forced upon victims.