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

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

The arch marks the beginning of the road for northbound travelers.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

A mysterious castle built as a monument to lost love.

Former villa and estate of James Deering developed to preserve native tropical forests.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Make your reservation to have coffee with some kitties.

The massive machine creates cracking displays of indoor lightning.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Considered by many to be one of the most dangerous highways in Alaska.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

The only road through the heart of Glacier National Park.

Spectacular views await visitors to this lake.

A wonderfully curated used bookstore in an airport.

The smallest covered bridge in Maryland.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

An enormous goose sits atop this nest-shaped home.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

The first commercial nuclear power plant constructed on Long Island.