A naturally beautiful, seemingly bottomless deep blue spring.

A Romanesque tower appears when water levels drop.

A long strip of fossil-filled limestone makes up this natural bridge above a rushing stream.

These striking ruins of a castle resemble a ship's stern.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

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

A Spanish forest is filled with mysterious stone carvings.

A science fiction-inspired apartment building designed by a famous Spanish architect.

A bronze sculpture of a monkey sits outside this factory, which has made an anise-flavored liqueur for over 150 years.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.