Semi-mystical manmade towers of rocks decorate this rocky seaside.

A contemporary art installation housed within a Gothic cathedral.

An architect transformed this abandoned cement factory into his castle-like workshop.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

This cafe offers a curated collection of treats and tipples made by monks and nuns.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

A beautiful but toxic fountain of mercury.

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

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.

This 17th-century manor house provides a fascinating glimpse into old-world Mallorcan life.

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

From the dishes to the art, this Michelin-starred restaurant orbits around one beloved French melon.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

A private garden of sculptural eccentricities.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

One man's desire to transcend art led to the construction of this outsider chapel.

Longest canal tunnel in the world, abandoned in the 1960s.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.