This elegant arc of a waterfall marks a religious turning point.

Rising from the sea like a stone monster.

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

A century after his death, this covered bridge still calls to mind the plein air painter who loved it.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

The largest tidal whirlpool in the Western Hemisphere.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

These mysterious petroglyphs in Vermont reflect a troubled history in the treatment of Native American culture.

Even Henry David Thoreau found this glacial pothole irresistible.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.

An abandoned Incan construction project left behind a mysterious "doorway."

Astronomical observatory above Lake Titicaca.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

A fascinating little museum all about the rich history of Peru’s famous plant.

Death rituals and sacrifice inside a Peruvian megalith.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.