G.V. Black, the Father of Modern Dentistry, keeps an eternal eye on Chicagoan’s teeth from his perch in Lincoln Park.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

Where Cusack's record store from the film "High Fidelity" was located.

Home to a protest movement, a bombing, and a dramatic change in labor history.

Beloved bar home to musicians of all eras and reputations.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This shop for all your super spy needs hides an educational secret.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

An antique cemetery in New York, this land is home to any number of famed corpses.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The second oldest continuously operating bar in Louisiana.

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

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

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

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.