Oldest unrestored plantation house in America that is open to the public.

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

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

A large replica of a monumental Roman inscription is located on the side of this museum.

This large, circular tomb is the final resting place of the first emperor of Rome.

A collection of objects supposedly singed by the hands of souls in purgatory.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This is the oldest Roman-made bridge in the city still existing in its original state.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

The Pope’s secret escape route.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

A charming monument to a very special dog.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.