This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

The largest drain hole in the world.

Delightful disarray of found objects and clutter.

An otherworldly musical haven in The Big Easy.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

One of the now-less-hidden floral gems of the "Emerald Necklace."

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Friction between grains of sand cause a curious "singing" sound.

The L.A. Zoo has a secret garden of rare bootleg cycads, a palm specimen dating back 280 million years.

A unique sculpture park that specializes in the huge and bizarre.

No one really knows how these old hobby horses got here, but the herd keeps growing.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Abandoned bridge hidden deep in the San Gabriel Mountains.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

Free public park and gardens filled with peacocks and peahens.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.