The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

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

Two stone columns flank the grand Venice square, but there were supposed to be three.

100 year tradition of fist fights, marked by marble footsteps.

Go inside to really appreciate this 500-year-old technological masterpiece.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

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

The whiskey producer's archives includes a historical list of infractions committed by and associated penalties exacted upon employees.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

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

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

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

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

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

The second oldest continuously operating bar in Louisiana.

One of the largest trees of its kind in California.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.