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

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

Shop for books in the New Orleans house where William Faulkner once lived.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

Three hundred years of preserved Spanish colonial history in San Antonio.

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

This otherworldly church spire reaches up toward the heavens.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."

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

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Less a museum than a bizarre fantasy world created by artists and engineers.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

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

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

An experimental, automotive replica of Stonehenge.

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

A genuine Tudor manor transported piece by piece from England.

San Diego's most historic and haunted home.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.