Macabre astrological automaton clock dating to the late 1400s.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

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

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A fascinating insight into daily life in the Eastern Bloc.

The most visited, and possibly most controversial, museum in Germany.

Single runway interrupted by a busy road that cuts across its middle.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A Spanish town built into the cliffs.

A huge boat-shaped hotel with a blood red pool and other oddities.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

What was once a unique system of urban elevators is turning into a mechanical ruin.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This attraction is devoted to the wonders of steam power and features a replica of one of its most public disasters.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

As one of the world's largest hydroelectric dams this plant took two countries to get built.

Solitary monument dedicated to the beauty of nature.

Museum precariously perched on a massive yellow pillar.