Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

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

The site of a gold-digging conquistador's bloody landing in the Americas.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

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

Like Mardi Gras, only everyone's a pirate.

A luxuriant botanical garden below sea level.

A Northwoods sporting competition that shows lumber jacks doing much more than cutting down trees.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

Hundreds of protractors affixed to surfaces all over the city.

Behold the rickety glory of one of the oldest roller coasters still standing.

These disused steel furnaces are now haunting ruins that may one day be a national park.

Pennsylvania's own Roswell-style UFO mystery.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

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

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

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

World's largest Christmas store.

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