This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

A remarkably opulent mansion with a tragic history.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Visit these gentle, bell-bottomed, exquisite equines at the home of North America's first Gypsy Vanner horses.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

One man's vision and a labor of love of many.

A vertically floating hemlock controls the waves and weather at Crater Lake.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Journey through a collection of over 35,000 Halloween items from all generations.

A subterranean haunt where wine and homemade biscottis are always on the menu.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

Race through the maze, get your name on the sign.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

Ruins of an American Civil War iron forge still survive today.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

The world's brightest bioluminescent bay.

The library of every book lover's dreams.