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 lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

A little sculpture with a large wardrobe.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Climb inside an iron crystal magnified 165 billion times its normal size.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Hidden beneath the streets of London is a secret subway that only carried mail.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

10,000 flowered plants bloom in the City of Roses.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

One of the shortest streets in York has an especially odd name.

A century-old tradition has culminated in a small but singular collection of feline effigies.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Community bookshelf of 25-foot-tall book spines.

This abandoned prison castle has become an imposing gallery of graffiti art.

This recently restored timepiece has stood all around Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.