An opal mining town in the middle of Australia where people live, worship, and shop underground.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

Australian Lake set aglow by Noctiluca Scintillans.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Victoria's largest salt lake is a favorite haunt for photographers and stargazers.

An unusual manor of stunning beauty, born out of a crippling disease.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

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

An unassuming historical marker for an iron age fort leads you to an oddly adorned cemetery for unbaptized children.

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

An important pilgrimage site for pagans and early Christians, named for a Celtic goddess-turned-saint.

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

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

The oldest licensed distillery in Ireland.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

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

The oldest public library in Ireland.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

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

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.