Places glenswatman Wants to Go

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

A medieval church built into an ancient cave.

One man's stunning attempt at eco-friendly living.

100-windowed castle turned art gallery, built by one dedicated mason.

A unique underground structure dating back to the 1st century BC.

Figures of unknown origin carved into the surfaces of underground caves.

The man who introduced reinforced concrete to the world demonstrated its genius by using it to build his own house.

One man's desire to transcend art led to the construction of this outsider chapel.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

A massive base for the Nazis' most formidable weapon in the Atlantic.

Fighting the British and making game shows for over 150 years.

A castle-like sea fort from the 17th century is now a museum to oyster farming.

A quarry cum sculpture park where the works of art are chiseled into the very walls.

This crack in France's seaside cliffs once hid a sinister secret.

Wall after wall of this French seaside neighborhood is intricately decorated with seashells and corals.

The ruins of a medieval castle linked to the murderous French lord that inspired the famous legend of Bluebeard.

This miniature Paris, built out of trash, is one man's two decade labor of love.

The deserted pirate-themed restaurant still entices explorers.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

The sunken structure looks like the victim of a catastrophic flood.

This tiny hotel perched atop a 50-foot tower really puts things into perspective.

An aluminum skeleton brings Chinese mythology to the French shore.

These red marks, seemingly placed at random, are in fact not.