One of the most exquisite Lycian hilltop citadels in Turkey.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

"We Seceded Where Others Failed."

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

Visit this playground of waterfalls, caves and sinkholes.

One believer transformed a local curiosity into proof of Vikings on the Great Plains.