Naked scientists race around the pole in the frigid cold to try to join Antarctica's exclusive 300 Club.

Russian Orthodox church built on an Antarctic island.

The best place to send your postcards home from Antarctica.

Fire meets ice at the southernmost volcano on Earth.

Natural time capsule containing an alien ecosystem.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

An important landmark in the history of algebraic logic.

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

Some of the saint's blood and bones are said to reside in Dublin.

A devastating booze inferno poured through the streets, claiming several victims who drank it.

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

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

The oldest public library in Ireland.

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

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