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

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

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

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

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

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

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

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

An abandoned Byzantine fortress and notorious prison.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

A museum glorifying the life of Stalin, located in the city of his birth.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

Ancient rock-hewn town that witnessed key events of Georgian history.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

Old Danish castle immortalized in Shakespeare's Hamlet.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.