Thousands of Haitians travel to the waterfalls to ask the Virgin Mary of Mount Carmel and her voodoo counterpart Erzulie for healing in a yearly pilgrimage.

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.

A complicated contraption for telling time by the moon.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

The largest tidal whirlpool in the Western Hemisphere.

Former laboratory of radical psychiatrist Wilhelm Reich.

Commemorating the spot where the famous scientist fed his pigeons.

Genesis of modern hydroelectric power.

This massive, ancient stone was disassembled and then put back together again.

One of the largest underground systems runs under Canada's largest urban center.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

See massive fossils that are over 200 million years old in northeastern Arizona.

A clear blue swimming hole with hidden caves, still unexplored.

A cave's rare beauty held a cavernous secret hidden underground.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A pink cottage covered in hearts served as a haven and a resting place for LGBTQ activists.

New Orleans' famous cemetery, located on the site of a former race track.

A 19th-century shrine covered with prosthetic body parts as votive offerings.