A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

The oldest continuously inhabited street in America.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Eight whimsical acres of metal art.

Astonishing collection of helmets, scientific instruments, and medical models.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

This popular fishing spot at the outflow of a 4.5-mile long hydroelectric tunnel sports a jetty literally made out of classic cars.

Colorful boxes placed over the dead are left to rot and crumble.

Four-story concrete hotel never opened to customers.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

The fifth-longest natural arch in the world, and the longest outside China.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

The king of U.S. high points towers over every other peak on the continent.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

The remains of what was once the world's steepest passenger funicular.