The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

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

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

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

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

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

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

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

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

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

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

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

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

The oldest church in Iceland is one of the few to feature ornate decoration.

Rising from the sea like a stone monster.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

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

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This beautiful, historic church looks like something out of a simpler past.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

This stunning concert hall has become a symbol of Iceland's national recovery.