A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

This highest peak in New Mexico is named after an explorer who had a habit of lending his moniker to peaks.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

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

The southernmost outpost of the Russian Empire in colonial America.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

A spectacular Neoclassical palace is home more than 15,000 artifacts and works of art.

An ancient Greek monument and a Byzantine church coexist inside this cave.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

Legend says this sacred tree was a gift from goddess Athena.