This abandoned Antarctic research station is a Soviet ghost frozen in time.

The world's largest neutrino telescope searches for secrets of the universe at the South Pole.

Russian Orthodox church built on an Antarctic island.

One of the world's southernmost bars.

Fire meets ice at the southernmost volcano on Earth.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

Natural time capsule containing an alien ecosystem.

The best place to send your postcards home from Antarctica.

This Neolithic passage tomb forms part of a World Heritage Site.

An oddly conical beacon perched atop beautiful Irish cliffs.

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

The ruins of a medieval monastery named after a type of tree.

A standing relief of a Norman knight whose posture marks him as a Crusader.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

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

This natural sea arch highlights Ireland's rugged coastal beauty.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

This ancient Irish landscape boasts hundreds of legendary ruins.

A stunning Victorian abbey and walled garden on a lakefront.

Petrified footprints of one of the very first vertebrates to walk on land.

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

This ancient Irish tower could easily have stood in for Rapunzel's prison.