A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

A small Richmond island dotted with the remnants of hundreds of years of history.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

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

Siberian husky that delivered a life-saving antitoxin.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This whimsical stacked cabin looks like something out of a children's book.

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

A trading post in the North Pole where children send letters.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

One woman's dream became a train hotel in her backyard.

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

This one-room cabin where the young colonel slept during the French and Indian War.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

The only presidential monument to display a late POTUS's actual casket.