A Belle Epoque bordello turned into a themed love hotel.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

Treehouse motel and treehouse-building school.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

"The most colorful grottoes of the world.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

A mysterious castle built as a monument to lost love.

An obscure waterfall that looks like something out of a fantasy novel.

The longest continuous lava tube in Oregon.

On the Oregon coast there is a natural hole that seems to be draining the sea.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Visit this playground of waterfalls, caves and sinkholes.

This structure among the trees was the result of divine inspiration.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

Amateur taxidermy museum known for its large collection of white squirrels.

One Austrian's singular yard is now preserved as a folk art garden of concrete wonders.