This fantastical waterfall is hidden in a cave located in a cracked cliff.

The whiskey producer's archives includes a historical list of infractions committed by and associated penalties exacted upon employees.

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

A hugely vast Irish landscape of barren rock that stretches for miles.

The oldest licensed distillery in Ireland.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

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

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

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

Medicinal spa created with the discharge from a geothermal energy plant.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

Three columns of volcanic rock shoot out of the ocean.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

The most powerful waterfall in all of Europe.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A sulfuric martian landscape that looks far better than it smells.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

This elegant arc of a waterfall marks a religious turning point.

A fantastic reconstruction of a 10th-century Viking longhouse.