This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

Oliver Cromwell once seized the land under this house, which included the ruins of a medieval abbey that the owner used to build his stately home.

A corkscrew-shaped barn in Ireland.

Obelisks and stone pineapples in the Irish countryside.

The oldest public library in Ireland.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

An elevator into the Baltic Sea.

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

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

Death rituals and sacrifice inside a Peruvian megalith.

Huge Russian Orthodox cemetery in danger of being converted into open public space.