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.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The palatial McDonald's that inspired Wesley Willis.

A display of magnificent stained glass windows is the first exhibit of its kind.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This historic hotel invented the chocolate brownie.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A lush green oasis in the middle of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

The legend associated with these ruins understates the splendor of the mansion that once stood here.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

Nope, not Washington Irving's house.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

This slender three-story building has also had several famous residents.