These unique and ever-changing caves are a wonder of Iceland.

A tiny village church in dramatic surroundings.

Three columns of volcanic rock shoot out of the ocean.

Along this wire fence, travelers have been leaving a particular memento since 2012.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This beautiful, historic church looks like something out of a simpler past.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

An Irish Memorial commemorating those who perished due to potato blight.

Walk down an otherwise nondescript alley near Washington Square West in South Philly and find yourself in a vivid, immersive mosaic wonderland.

A layered tribute to the work of mosaicist Isaiah Zagar.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

Once the largest public hospital for the mentally ill was also surrounded by controversy.

A historic bridge no one is allowed to cross.

This candy-colored storybook village originated as a 19th-century Methodist campground.

This supermarket is suspended 25 feet above an interstate highway.

One of the smallest churches in the United States is located along the side of the road in a residential neighborhood.

One of the largest public collection of historic armored and military vehicles in North America.

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

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."