Covering 37 subterranean acres, this Armillaria gallic is a famous fungus with its own festival.

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

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

Housed in an old British jail, this spot serves up Georgian, Russian, and Ukrainian specialities with a side of Turkish history.

Quite possibly the oldest love poem known to humankind.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A meow-velous tribute to a beloved street cat, made famous on the internet.

A deadly ancient portal to the underworld.

This famous city eluded concrete detection until the early 2000's.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A marvel of Byzantine engineering under the streets of Istanbul.

This eatery re-creates dishes from the Ottoman Empire so you can dine like a sultan.