A bright little alley in La Boca is a part of tango history.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Final resting place of Antarctic explorer Ernest Shackleton.

Three columns of volcanic rock shoot out of the ocean.

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

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

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

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.

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.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

A museum marks and documents the site of the Titanic's launch.

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

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The attic of a four-century-old canal house hides a clandestine church.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Ordinary art transforms to extraordinary thanks to locals' quirky sense of humor.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

A French artist's vague warning hangs over Belleville.