Go surfing on this urban wave, "hacked" by local surfers.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

The ancient tomb acts as a calendar that keeps perfect time.

This unique zoo is the only place in the world where you can see all 15 species of crane.

A large circus museum with summer performances.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The world's longest known cave system.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Commemorating the spot where the famous scientist fed his pigeons.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

An artist's cute bronze subway sculptures belie his violent artistic past.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A bit of retro transportation flair preserved in the world's largest department store.

Lie in a hammock where George Washington stood.

During the holidays, a vintage subway train whisks New Yorkers back in time.