This Neolithic passage tomb forms part of a World Heritage Site.

The ancient tomb acts as a calendar that keeps perfect time.

Founded in 1788, this Rhode Island institution is the oldest operating general store in America.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

This plaque honors the unsung Black songstress once known as the “greatest singer of her race.”

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

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

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

One of Ireland's best-preserved chambered cairns can be found next to a wishing tree.

Modern sundial uses ancient methods to tell time and date perfectly.

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.

A remarkably intact castle that once was the largest in Ireland.

For fans of the stained glass art of Irish illustrator Harry Clarke, this church is the place to be.

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

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The last standing piece of a famous Honolulu landmark.

This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

The last four extravagant street signs of London's historic banking street.

These Victorian era devil sculptures were designed to spite a local vicar.