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

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

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Apartment complexes built into huge repurposed natural gas tanks.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A spherical "micro-nation" in the heart of Vienna.

Breathtaking and huge 430 year old maps of Italy.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Pivotal home of Nobel Prize winner Pablo Neruda.

A whimsical European-style chateau that calls the coast of Chile home.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

America's largest viking stands in a Minnesota city that believes it was visited by the ancient nords.

One of two giant blue cockerel statues erected with an intentional double meaning.

The watery grave of an impractical idea.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

No one's quite sure where this quirky university tradition originated.