Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Three hundred years of preserved Spanish colonial history in San Antonio.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

This private residence was the template for one of the most beloved television homes of all time.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The longest and widest floating bridge in the world.

A wall of chewing gum moonlights as collective art.

A giant Troll lurks under one of Seattle's oldest bridges.

The second oldest continuously operating bar in Louisiana.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

A vast array of tropical plants collected by a vacationing couple.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.