French Time Capsule-19th Century home revealed to the public.

A Gothic cathedral created from volcanic rocks.

More than 140 granite sculptures decorate the lawn of this French sculptor.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

Lady Liberty's original designer installed a little clone in this French fountain.

The world's largest reflecting pool is just two centimeters deep.

An isolated village literally built into the crevices and rock formations of a mountain.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

An abandoned Indian-inspired mansion.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Beneath the city of Lourdes, France is a massive, concrete church.

A whimsical garden of outsider art in the Spanish countryside.

Sanctuary on a ridge near an ancient shrine to a "Black Madonna" built by the founder of Opus Dei.

A modernist church in an ancient village.

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

Abandoned Nazi train station turned underground astroparticle laboratory.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

A series of recreated fortifications mark George Orwell's path through the Spanish Civil War.

A landscape decorated with enormous skull sculptures.

A medieval village holds a very modern hotel.

The quirky - and private - constructions of a secluded artist depict the house of God.

The tiny Spanish village that long refused to change its outrageously anti-Semitic name.

Cliffside houses provide a spectacular view from their perch above the valley.