Medieval ruins nestled within a breathtaking swath of Spanish nature.

This spectacular bridge is part of an abandoned train line that once connected Mallorcan capital to the southeastern coast.

Eccentric sculpture garden brings Basque mythology to life.

Salaguti's live-in museum: a fortress against criticism and consumer art.

This abandoned gold mine found a second life as a post-apocalyptic film set.

A house covered entirely with shells.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

An uninhabited village that preserves and documents rural architecture and an endangered way of life.

Marvel at this massive waterspout fueled by the incoming tide.

The abandoned club hides in the hills of Ibiza.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

This architectural oddity is an oasis of green on the outskirts of Valencia.

Experience this Iron Age village the way that its original residents would have.

This historical manor is complete with a magnificent garden.

A 12th century church completely covered in shells.

The deserted remains of a luxury hotel turned hospital ward.

One of Europe's oldest yew trees has lived more than 2,000 years.

This store decorated with Japanese and underground pop culture items has been the centre of Barcelona alternative fashion scenes for more than a decade.

Rumors and legends of secret Nazi activities surround this eerily remote island mansion.

The surviving remnants of a destroyed medieval church now stand in a public park.

The blowhole bursts spectacularly right next to the buildings in a medieval seaside town.

Long tunnels run under the ancient chariot racing circuit to the tower.

Spain's largest bullring offers a unique glimpse at architecture and history.