A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

The highest point in Washington state is a volcano covered in glaciers.

A wall of chewing gum moonlights as collective art.

The oldest continuously occupied public building in the United States.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A multi-storied adobe complex has been inhabited for more than a thousand years.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The final resting place of New Orleans' most famous voodoo priestess.

A snapshot of the city's fascinating voodoo culture.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

All that remains of the Whittall mansion are the ruins of the formal garden and its pergola, dedicated to the late Matthew J. Whittall by his widow.

The site of the first "historically true" UFO encounter in the U.S.

The oldest farmer's market in America is so ancient it was approved by the King of England.