The first mosque in the world to receive electricity.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The place where World War I began.

There is a mouldering Jewish cemetery hidden away in the capital of Moldova.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This 47-story "M" needed 20 years to be completed

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

A temple to modernity, tucked away amid Barcelona's more well known museums.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

An ancient Egyptian temple in the middle of Madrid, Spain.

Mountain where Jesus was first tempted by the Devil.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

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

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

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

A powerful tribute to the victims who suffered under Ethiopia's most devastating regime.