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

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

Certain traditions prevail on the least-visited island of the Aran Islands.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

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

The oldest public library in Ireland.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

An ancient neolithic tomb that only sees the sun twice a year.

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

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

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

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

Amsterdam's former hotspot for public executions and dissections.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.