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

Collapsing castle on the Hudson river was once the storage site of military surplus business.

West Point’s only monument to a woman veteran stands above an empty grave.

Oriental bazaar in the heart of Sarajevo.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

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

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

This quaint museum lets you take a ride on its antique carousels.

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

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

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

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

FDR's Art Deco hospital tower was hopelessly inefficient.

Perhaps the most scandalous statue of America's first president.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

Peace Park and the Atomic Bomb Dome.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

One of Japan's most famous sights, the bridge was originally built in 1673.