An icon among Florida's pre-Disney tourist attractions, just west of Orlando.

A building so large that it has its own weather.

A vast array of tropical plants collected by a vacationing couple.

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

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

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

A haunted hill that supposedly defied gravity.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

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

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

Holding the most bodies of any cemetery in the United States.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Elevated freight railway turned wildly successful urban park.

The trials and tribulations of marking Poe’s grave.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

A former major munitions plant that has been converted into a sprawling art space.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

The romance of early commercial flight still fills this Art Deco destination.

At 207 feet, one of the world's longest continuous escalators.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This statue of the "father of television" stands prominently in the United States Capitol.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.