The glowing blue Nymphaeum of Emperor Tiberius.

This clifftop arch is a natural stunner.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Its unique collection details the history of the state's svelte railroads.

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

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

One of Ireland's most infamous prisons for rebels including men, women and children.

A hugely vast Irish landscape of barren rock that stretches for miles.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

The modern birthplace of Irish freedom.

Northern Ireland's Brobdingnagian stepping stones.

A stunning Victorian abbey and walled garden on a lakefront.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

The ruins of a monastery that dates to the 7th century.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.