Though they've since been renamed, these two streets hint at Dublin's darker days.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

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."

An 1814 castle that hosts an exhibit of "explorabilia".

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

A corkscrew-shaped barn in Ireland.

The oldest public library in Ireland.

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

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.

Obelisks and stone pineapples in the Irish countryside.

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

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

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

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

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The most visited, and possibly most controversial, museum in Germany.

Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

A particularly disconcerting tribute to Irish martyrs.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.