Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Swedish skyscraper with a 90° twist.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Real bones which are said to have belonged to a Polish dragon.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

A fortress off the West coast of Portugal that dates back to 1502.

A cluster of granite granaries perched on stilts.

Elaborate tile work in this railway station tells the story of Portugal.

Dead weights honor the dead of Portugal's fishing industry.

Ancient catacombs form the foundation for this Rococo orgy of a church.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

A unique seaside cave where Aleister Crowley faked his own death.

The stunning interior of this Gothic church is covered in ornate gold details.

This small chapel is built of human bones and decorated with a golden skeleton.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

The costumes depict the Kurent, the star character of the annual Kurentovanje festival.