Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A preserved stump is all that remains of the once-mighty hardwood.

A goofy attempt to generate business for a repair shop turned into one of Ottawa's favorite tourist attractions.

Prehistoric animals decorate this popular outdoor park.

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

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

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

This cave holds a surprisingly colorful variety of geological oddities.

A theme park attraction designed to turn your children into LARPers.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

A striking lighthouse with views of the Gulf of Mexico and of a military air show.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

This now-deactivated naval base defended the Florida coast for centuries.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

One of the oldest, tallest, and most haunted lighthouses in America.

A tribute to Ponce de Leon's supposed quest for eternal youth.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The world’s first penitentiary, meant to be humane, drove men insane.

As the oldest natural history museum in the Americas, these halls contain everything from dinosaur bones to biological samples collected by Lewis and Clark.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.