Baroque celebration of the end of the Great Plague of Vienna.

Walk through Czech history in Prague's largest graveyard.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

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

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."

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

The commemorative stone column conceals a secret laboratory.

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

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

This legendary urban waterfall creates a dazzling display of rainbows.

This memorial was created by an Irish nurse who lived in New York City during 9/11.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

The modern birthplace of Irish freedom.

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