An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Napoleon’s home in exile, decorated with poisonous wallpaper.

A bizarre house filled with an astounding array of collections.

A bedazzled house and crown "jewel" of outsider artist Loy Allen Bowlin.

This Art Deco airport was once deemed “the air hub of the Americas.”

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A little piece of Paris in the sultry south of the U.S.

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

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

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

The greatest collection of New Orleans masking and processional traditions covering everything from Baby Dolls to Skull and Bone gangs.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

The legendary building that needed ghostly approval before being built.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A 50-foot tile mural mosaic for the 100-year anniversary of the Statue of Liberty.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

Because there's no place like home.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

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

Most famous work of one of Frank Lloyd Wright's sons.

Historic house-museum dedicated to the revolutionary gay graphic artist Tom of Finland.

One man's homage to the sun continues to grow like a glass fractal.