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

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Not actually a shop, but one fan's passionate show of support for a rival county's Gaelic football team.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

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

This single room has survived the centuries with almost no deterioration.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

Petrified footprints of one of the very first vertebrates to walk on land.

Wander among the abandoned ruins of this once-powerful medieval town.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

The oldest public library in Ireland.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

The modern birthplace of Irish freedom.

The commemorative stone column conceals a secret laboratory.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

“It's the quality” (but probably also the drive-through donut tunnel) that has attracted diners since 1968.

San Diego's most historic and haunted home.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

Bug-devouring flora are the stars of a special wing of the glass conservatory.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Ancient human remains unearthed around the iconic monument.