A lush green oasis in the middle of Chicago.

An enormous park-like oasis, full of famous Chicagoans' graves.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

A high-octane shrine to the greatest Texans who ever lived.

A prison-like structure guards the remains of a notorious Old West outlaw.

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

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

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

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.