The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

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

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.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

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

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

The modern birthplace of Irish freedom.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

An optical Illusion once believed to be an electrical phenomenon.

Wallabies live naturally on this Irish island.

Obelisks and stone pineapples in the Irish countryside.

A corkscrew-shaped barn in Ireland.

Remote ruins of a 2,400-year-old Iberian settlement.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

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

The inscribed stone at Kilnasaggart is a remnant from nearly a millennium ago.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

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

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.