This homegrown adoption center offers a wonderland of feline companionship.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Home to drunken tower-climbing goats... seriously.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Walk the whole Mississippi River!

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Quite simply the largest tree in the world (by volume).

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

A huge musical instrument played by the ocean.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

These eerie outliers of the lightning bug family glow a mysterious blue color.

Traditional Appalachian dances such as the Georgia Rang Tang and the Shoo-Fly Swing are kept alive at this weekly event.

Leave it to Key West to drop a real-live drag queen instead of a ball to mark the arrival of the New Year.

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

The so-called "world's shortest river" is actually a window into a cave.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

A European-style bath house in Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This shop for all your super spy needs hides an educational secret.