This black shoreline is made up of exploded lava particles.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

Climb right into the heart of this colorful Iceland volcano.

This tiny museum's sizable collection is jammed into a former underground public toilet.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

A little-visited waterfall in an otherworldly landscape.

This museum dedicated to divination also honors a local 10th-century prophetess.

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

Medical history museum featuring a lovely doctor's office from the 1800s.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

The storied steakhouse is the last in a long line of Lebanese-owned supper clubs in Tulsa.

A museum and apothecary garden devoted to the history of frontier medicine.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

Vikings and Evangelicals have both had a hand in this replica medieval church.

A bizarre house filled with an astounding array of collections.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.

The house is an iconic pilgrimage site for fans of the Illinois-based emo band.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

An antiquated German apothecary on Chicago's North Side.

A monument to the art of slicing people open.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.