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

More than 100 Hindu temples are slowly being swallowed by the forest.

A battle between nature and architecture in the Cambodian jungle.

An ornate tomb pays tribute to one of the most influential and cherished military leaders in Vietnam's history.

This historic spot was where America's involvement in the Vietnam War officially came to an end.

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.

One of the oldest temples in Ho Chi Minh City, dedicated to a deified Chinese military leader.

A memorial to the monk who set himself on fire to protest the persecution of Buddhists in Vietnam.

The bank's whimsical shape was inspired by a child’s toy.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

This Bangkok high-rise looks like a rudimentary LEGO elephant.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

Amsterdam's Red Light District leaves little to the imagination.

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

A uniquely preserved neo-Gothic church that is now home to a collection of art and woodcarvings.

This century-old street sign is a forgotten remnant of the old city.

Unknown to many, this is where items not displayed in a Dutch history of science museum are held.

The location of the world's first telescope demonstration.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

This public library and its impressive collection of academic books have not changed since the 17th century.

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.