An old slaughterhouse now holds the largest collection of pig artifacts.

This lakefront cottage was crafted in the 1800s and was once a sanitorium.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

This rooftop sign has been confusing Milwaukee-bound airline passengers for decades.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

The park is home to the United States's only still-operating Dutch windmill.

A plaque marks the former home of Käthe Paulus, an aerial acrobat who invented the modern folding parachute.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

A monument to the man who almost killed Hitler.

Come for the 14-foot-long taxidermy alligator. Stay for the mini costumed gators shooting pool.

After the oysters have been shucked, and the restaurant's been shuttered, the terrazzo sidewalk from the 1940s is all that remains.

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

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

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

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

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

It's clear this abandoned Art Deco gem was no ordinary cleaners.

This quaint museum in a long-running workshop is dedicated to a fixture in New Orleans lighting.

The South's nickname was supposedly born at a former bank in New Orleans' French Quarter.

Taxidermied cartoon heads, unseen illustrations, and famous characters all reside in this small gallery space.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

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