An astounding 13th-century architectural and historical achievement

Built in 1917, this building is home to the last working spring-loaded dance floor in Utah.

This enigmatic piece of art is a mnemonic device from the early Renaissance.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

This unique museum focuses on the Siege of Sarajevo through children's eyes.

A ghost town now swarming with dozens of prairie dogs.

The seventh largest spring in the world.

A living museum of curated gardens honors 4,000 years of agriculture in the Santa Cruz River basin.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

The remnants of a 1970 plane crash remain high in the Rocky Mountains.

For nearly 50 years this airplane that crashed during World War II remained missing in the remote Australian backcountry.

This sinkhole is disguised as a pond and named after the man who stumbled upon it.

The first statue of Christ sleeping on a bench in the United States confused its affluent parish.

The 15-foot-wide, 2-ton pan fries hundreds of chickens once a year.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

These strange large stones served as a campsite and lookout post for generations of Native Americans.

A mailbox that saved a nature reserve.

This scented city oasis was a labor of love.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

This vast kitty-themed collection illustrates the history of human-cat interaction.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.