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

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

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

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

A sculpture of the beloved author surrounded by characters from his fairy tales.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Two stone columns flank the grand Venice square, but there were supposed to be three.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

This doorless 20th-century elevator doesn't stop or slow down.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Eat the ultimate iteration of Portugal's most beloved pastry.

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

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This living legend of maritime history is enjoying a second life.

The world's largest frame offers spectacular views of the city's past and present.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

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