This curious, round temple is the oldest still-standing marble building in Rome.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

This ancient Roman arch misled treasure hunters for centuries.

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

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

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

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

An 18th-century post box used to alert the church of sick and ailing foreign pilgrims.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

A haunting, yet lovingly hand-hewn potters' field full of graves that flood with each heavy rain.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A museum and shop on Bourbon Street located in the French Quarter.

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

The second oldest continuously operating bar in Louisiana.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

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

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

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

A pair of black granite tails dive into a sea of grass in landlocked Vermont.

One of the oldest carousels in the United States is still running in the coastal village of Watch Hill.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.