The world's longest known cave system.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

This shrine to the patron saint of Alaska sits on a small tidal island and was built from the land’s own beach stones.

On top of a sheet metal business in Juneau stand nearly a dozen charming Wizard of Oz statues.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A beautiful bamboo trail tucked in this famous Japanese shrine.

This 700-year-old street food market features baby octopus and soy donuts.

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

The 10,000 Torii shrine.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.