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

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

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

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

Four-story concrete hotel never opened to customers.

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

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

Gorgeous cave resemble a winter wonderland.

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

Turns out you can see the world without ever leaving Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.

For nearly 200 years the same family has harvested ice from a small pond in eastern Maine.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

A century after his death, this covered bridge still calls to mind the plein air painter who loved it.

A giant telephone commemorates the last "crank" call ever made in the U.S.

Walk the same tracks that once ferried Gilded Age aristocrats to their vacation destinations.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

New England's tallest light house stands on an island with a history of cannibalism and death.

This Maine bridge may be the last wire-supported bridge of its type in the world.

A strange mark in the stone fence of a cemetery fabled to have been made by the Devil himself.

Steam engines and conveyor belts are remnants of a genius system left in the middle of the Maine woods.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

The house and graveyard used in the Stephen King spine-chiller.

The world's largest rotating world.