According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

This tower was once used to create ammunition for early settlers.

The oddly shaped, steam-spewing building is now an art studio and gallery.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

This amazingly preserved Gold Rush town is a historian's dream.

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

This two-room shotgun shack in Tupelo is the birthplace of a King.

A small "palace" and museum made of, and devoted entirely, to salt.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

A metal menagerie fills the yard of this museum and gallery, the work of Montana artist Bill Ohrmann.

A community-funded monument to kindness in the face of life's difficulties.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

This dilapidated ship carcass covered in trees is a striking sight.

Every last book in this bookstore is signed by the author.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

The final resting place of the camel who served with the Confederate Army during the Civil War.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

This historic Civil War church has survived over a century of racial turmoil but still stands as a reminder of the town's roots.

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

A Prada store in the West Texas desert that is never open for business.