A grand imperial capital left to fall into magnificent ruin.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

Ruins of an old water tower that look like a horror-film castle.

Lebanon's highest point offers expansive views, martian terrains, and eerie ski lifts.

Mummies preserved naturally for seven centuries.

The ruins of a monumental tower in the heart of Lebanese mountains still puzzle archeologists.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.

This modernist cinema has survived war and reconstruction to become a symbol of Lebanon’s revolutionary spirit.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

One of the oldest monasteries in the world is a key pilgrimage site for both Muslims and Christians.

This ancient mountain monastery welcomes all manner of faith in an effort to keep Christians in Syria.

What is left of the pillar of Saint Simeon, the voluntary martyr who climbed the column to give his sermons, remaining perched there for thirty-seven years.

The Syrian headquarters of alleged hashish-smoking assassins.

A 1,500-year-old ghost settlement is slowly fading away.

Ruins of the Crusaders' headquarters.

This basement museum explores the art and artistry of fascism.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This functional solar system model was inspired by the famous Eisinga Planetarium.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This narrow fjord-like bay is the largest ria in the Mediterranean Sea.

A World War II evacuation tunnel turned into a history display of Croatian state and people.