This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

This century-old ruined temple was reborn as "The Church of Skate."

Museum of amazing old toys and automata.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

Strange masks and obscure costumes are housed in this old Madrid corrala.

Learn how dolls are made in this fascinating museum inside a 19th-century mansion.

The remains of this misplaced church were moved here stone by stone.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

These ruins are all that remain of Tortosa’s lost coal gas manufacturing industry.

Containing a personal collection of more than 1,200 jugs from around the world.

A surrealist labyrinth and museum of contemporary sculptures.

A lovely look back at the manufacture and use of paper in all its forms.

1,300 chamber pots and their eccentric collector.

A significant cache of prehistoric valuables is on display in an unassuming museum tucked inside a town hall.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

This portrait of Philip V is always hung upside down, in a protest three centuries in the making.

This beloved ancient tree is the pride of this city center.

Ibi's pioneering toy factory now houses two small but mighty museums.

The four-story mural is the centerpiece of a lavish hotel's lush atrium.

These fly sculptures are scattered around the city and represent the patron saint of Girona.

The gaunt visage of this angular Christ giant is enough to put the fear of God into all who see it.