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

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

Perhaps the most spectacular grotto along the Algarve coastline.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

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

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

An abandoned Cambodian resort that mirrored the downfall of the country as it was happening.

A palace destined to never house a king.

A former French military respite turned jungle tourism hotspot.

Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.

The wartime prison now features haunting sculpted reenactments of the atrocities that took place there.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

This French colonial post office is arguably the grandest in all of Southeast Asia.

These crumbling towers are some of the last remnants of a centuries-old Vietnamese culture.

A Surreal flight of architectural fancy in Vietnam's Central Highlands.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

A secluded, little-known temple hidden amid the dense jungle.

Vietnam's largest Buddha statue depicts a female sage.

This impressive clifftop temple was once at the center of an international custody dispute.

5,000 skulls in memorial to those killed by the Khmer Rouge.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.