A fiery crater has been burning in the Karakum Desert since 1971.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

The beams of the New College, Oxford dining hall come with an amazing story.

Hidden in plain sight, this creepy sculpture watches from above.

One of Europe's oldest libraries.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

This historic black and white monastery is one of Bulgaria's architectural jewels.

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

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

A fountain standing as a testament to a doomed alliance.

An homage to the medieval rulers of Bulgaria.

Outstanding, eerie frescoes and decorations fill this 19th-century monastery.

Eastern Bloc nostalgia, anybody?

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

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

UNESCO-protected ancient burial ground.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

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

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

340-foot statue built to honour the Heroes of the Soviet Union.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.