Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

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.

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

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This shuttered power plant is now Turkey's first industrial archaeology museum.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A fountain standing as a testament to a doomed alliance.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Ancient serpentine sacrifice holder that has stood the test of time.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.