"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

This crumbling Portuguese ruin overlooks the populace it once ruled.

A museum of tiny buildings in the tiny country of Andorra.

A Romanesque tower appears when water levels drop.

Wonderland replication in progress by one persistent man.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Of course Salvador Dalí lived in a castle...

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

The Gaudí-inspired building that was the start of Terrassenc modernism.

A Spanish forest is filled with mysterious stone carvings.

This imposing modern citadel started out as a home renovation project.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Mountain where Jesus was first tempted by the Devil.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

A stately palace has been converted into the world's largest cannabis museum.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.