A building so large that it has its own weather.

A massive sustainable farm designed by the mastermind behind Central Park.

A castle built for love, and abandoned due to heartbreak.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

A giant toy jack made of numerous welded-together fire hydrants.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

The world-record holder for the longest bridge stretching continuously over water.

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

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

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

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

The only rotating bar in New Orleans has been slowly spinning since 1949.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

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

The first patented shaved-ice machine heralded a snowy wonderland of iced treats at a favorite New Orleans summer shack.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

New Orleans' famous cemetery, located on the site of a former race track.

The tallest monument in a historic New Orleans cemetery was prompted by romance and dash of pettiness.

This historic New Orleans cemetery is the final resting place of members of the Independent Order of Odd Fellows.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.