Friction between grains of sand cause a curious "singing" sound.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

Roman ruins top white travertine terraces formed by ancient hot springs.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

A bigger-than-life pun that has become a beacon of altruism.

A "Titanic" superfan changed his name to Jack and set up this strange shrine to the blockbuster, complete with Korean food and Tarot readings.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

The abandoned personal amusement park of the King of Pop.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This massive redwood tree has a hole in the base big enough to drive through.

The highest bridge in America was built for an almost unnervingly small amount of money.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

The largest greenhouse in the world is home to over one million types of plants.

The largest permanent Monopoly board makes one of the longest games even bigger.