The narrowest street in Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

A small museum dedicated to mustard making inside a still-working mill.

This seemingly humble work of art—a block of limestone—conceals a daring story and an artistic tour de force.

An ancient Roman relief beautifully preserved on the façade of a house.

Cemetery honors Americans who died during WWII and is the resting place of Gen. George S. Patton.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Luxembourg's most popular statue since 1923 has been missing for... 26 years!

An icon of International Style architecture on the outskirts of Rotterdam.

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.

One of Vietnam's only mosques pays tribute to the country's Muslim minority.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

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

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.

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

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

The spot where the two men ate together now stands enclosed in glass.

This steamed rice crepe specialist has been rolling up its namesake dish for over 30 years.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.