This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

An eclectic treasure trove of maritime marvels.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

Owned by no one but beloved by all, Brownie was a good dog.

St. Augustine's record-setting narrow street was designed to protect against pirates.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

Could this grave be the true resting place of legendary gunfighter "Doc" Holliday? Unclear.

An elegant Georgian cemetery best known for the grave of the little girl whose murder on Christmas Day remains unsolved.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

A haunted hill that supposedly defied gravity.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

World's largest Christmas store.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The world's longest known cave system.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.