A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

This wild explosion of color on a disused water tower tells the whimsical tale of a curious puffin.

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

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

This five-foot-tall bronze bird is a memorial to a species that was hunted out of existence.

A popular Icelandic children's story comes to life inside this cave.

The Hveragerði fissure runs through this unassuming shopping center.

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

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

This simple apartment may have inspired some of the most important theories in the history of science.

The bears of Bern have been a city highlight for over 500 years.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

This cheese shop also houses a museum devoted to Dutch dairy.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

Europe's official "zero-level," the equator of elevation.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

This residential door allows San Francisco muggles a glimpse at the wizarding world.