St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

Supposedly Satanic numbers adorn this preserved submarine sail.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

The ghostly remains of an accidental sea.

The unexpected mascot of Shetland's capital.

The first KFC is on the National Register of Historic Places.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

This public library still showcases its former life as a 19th-century church.

This audio art installation pays tribute to the weather and unique linguistic history of the archipelago.

Legend has it that a Dutch fisherman lost control of his Shetland pony and tumbled from this cliff.

Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This is the last hand-cranked chain ferry of its kind in operation in the United States.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

"The Most Boring Road in the State."