One of Europe's largest supercomputers is housed inside of a disused chapel.

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

A historic Christian shrine nestled within a spectacular natural cave.

Barça football fans might see the insignia hidden in a church window as a divine sign.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

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