This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

A strange house built only at night, with rumored mystic inspiration.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

Giant scissors seemingly stabbed into the side of a hair salon leave no question about the vocation of the owners.

A tribute to long time Venice Beach resident, artist and actor Dennis Hopper.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A sculpture for the sun and stars, created by Nancy Holt.

A replica that won't float away.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

A Mars simulation in the southern Utah desert.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A tunnel with windows, so you don't miss out on the impressive views.

This abandoned Antarctic research station is a Soviet ghost frozen in time.

The castle where the Marquis de Sade lived out his darkest fantasies.

700 iron sculptures crammed into a Mediterranean park.

This garden houses the remains of the ancient Greek port of Marseille.

Artist Danielle Jacqui decorates nearly every inch of her home inside and out with her work.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

A crumbling island fortress that seems to be covered in a field of stone crosses but is simply incomplete.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

A private garden of sculptural eccentricities.