This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This abandoned, partly demolished building is now home to beautiful graffiti and murals.

Along this wire fence, travelers have been leaving a particular memento since 2012.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A Wes Anderson-esque lighthouse that boasts magnificent coastal views.

The final resting place of the controversial chess champion.

This monument to one of the largest science fiction games of all time bears the names of hundreds of thousands of players.

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

Outlaws, hot springs, and tragedy have all left their mark on this ancient road in the Icelandic highlands.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

At this museum in Iceland, visitors can sample fermented Greenland shark.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

The Grand Mall in Varna hosts one of the biggest collections of Soviet-era paraphernalia in Bulgaria.

Not far from a popular beach, an unfinished, abandoned mansion for Bulgaria's last communist dictator.

Eastern Bloc nostalgia, anybody?

UNESCO-protected ancient burial ground.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

This bone-filled cave got its name after they found 140 bear skeletons inside.