A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

This outdoor gallery of sculptures along the East River was once a landfill.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

Lie in a hammock where George Washington stood.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

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

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Miraculous tree that seems to sprout out of solid rock.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A Wild West jailhouse that slid down the mountainside.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

A spiritual vortex among the red rocks in Sedona.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.

The F1 Mexican Grand Prix circuit goes right through the middle of this old baseball stadium.

The Latvian city of Ventspils is filled with dozens of cow statues showcasing unique themes.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

3,000 market stands in five former Zeppelin hangars.

Flamboyant architecture from the turn of 20th century.

These crumbling Latvian forts make for some haunting seaside ruins.