Under Hanoi’s medieval citadel sits a secret military headquarters from the final years of the Vietnam War.

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

A gift from the Soviet Union in the 1980s, this is the only statue of the Soviet dictator in Southeast Asia.

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

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

An extravagant monument to an extravagantly unpopular Emperor.

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

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

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

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.

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This small, ingenious cannon once helped regulate Parisian life.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

This 18th-century sundial was designed to calculate the date of Easter each year.

An unusual number plate signifies the building's saucy past.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.