Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Amsterdam's former hotspot for public executions and dissections.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

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

Festival of Perpetual Life and Rebirth.

Museum dedicated to the terror regimes of Hungary.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

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

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

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

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

Three columns of volcanic rock shoot out of the ocean.

Walk in the footsteps of the gods and straddle two tectonic plates.

The summer tourists on these cliffs are thousands of seabirds.

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

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

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.