A semi-scholarly approach to sex.

Two stunning 17th-century libraries and a cabinet of curiosities.

This South London cemetery holds the remains of more than 15,000 people.

A church of bones, decorated with 40,000 human skeletons.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A winding path built in secret on the edge of the continent.

This shop specializes in oddities and Victorian-inspired wonders.

One man's homage to the sun continues to grow like a glass fractal.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Resting place of Hollywood's immortals is also site of summer film screenings.

America's most famous piece of self-built architecture.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A one-of-a-kind collection of a unique medium.

Medical and zoological curiosities for sale.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A layered tribute to the work of mosaicist Isaiah Zagar.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.