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

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

A historic freight system that found the true gold rush is in tourism.

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

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

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

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

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

This quirky piece of naval artillery has been deafening Canadians for over a century.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This golfball sized platinum iridium cylinder is the official starting point for all national weight calibrations

The U.S. government built the million-pound stack of steel during the Space Race.

This four-story steel sphere in Maryland was used to test biological weapons.

A relic of FDR's brief foray into utopian urban planning.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

Seven people are buried in the middle of what's now a movie theater parking lot.

It was once the base for a series of domestic terror attacks.

Three abandoned missile silos are hiding in plain sight behind a suburban development in Maryland.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.