The highway's southernmost spot is a beloved local attraction.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

The island residents are known for taking their quirky sense of humor with them to the grave.

A building so large that it has its own weather.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A monument celebrating the idea of reaching inaccessible places.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

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

Death comes to anyone who dares to touch this concrete column.

Military and first responders can test their skills in a Foggy Bottom mock station down in Georgia.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

Georgia's highest point was given its strange name thanks to a simple translation error.

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

Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

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

Tour the sci-fi-esque reality of governmental disease management.

The world's largest fire hydrant is supposedly tornado-proof.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

I-95's Tijuana-style celebration of kitsch at the Carolina border.