Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A well-worn marker in a forgotten alleyway is all that remains of what had been one of Manhattan's most beautiful buildings.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Hear the tales of New York's most notorious criminals.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

A brick-paved former section of the historic coast-to-coast highway.

This old residential building was once the largest flour mill in the world.

This 1960s kinetic artwork has been restored and is once again whirling away in downtown Minneapolis.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

This zombie-themed restaurant stands out in the heart of corn country.

The oldest tofu shop in the United States is a firm favorite with locals.

These machines have been collecting dust for decades.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

A tiny art gallery in Sunnyside helps keep Portland weird.

Statues of Ramona Quimby, Henry Huggins, and Ribsy the dog in the park where their adventures "really happened."

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A riverside park built around the ruins of a massive dam that collapsed in 1909.

Home to part of the world’s largest private collection of original manuscripts and documents.