Duomo of Milan, (Milan Cathedral) in Milan, Italy.

Innovative feats of architecture are also explored throughout the compilation.

Scroll down to see some highlights and the video with the full list of unusual churches.

Duomo of Milan, Italy.

Duomo of Milan, (Milan Cathedral) in Milan, Italy. (Photo: masterlu/Depositphotos)

For even more fascinating videos dedicated to the art of storytelling, visitGreat Big Storys YouTube page.

Here are some of the most unusual churches in the world.

It should come as no surprise that this church is the worlds most inaccessible.

The world’s most unusual churches, according to a recent video by Great Big Story.

Photo: Marcin Szala viaWikimedia Commons(GNU Free Documentation License)

Once inside, though, its magnificence becomes clear.

The world’s most unusual churches, according to a recent video by Great Big Story.

Photo: Alix Saz viaWikimedia Commons(CC 4.0)

The world’s most unusual churches, according to a recent video by Great Big Story.

Photo: Johannesjom viaWikimedia Commons(CC 4.0)

The world’s most unusual churches, according to a recent video by Great Big Story.

Photo: Jean-Pol Grandmont viaWikimedia Commons(CC 3.0)

The world’s most unusual churches, according to a recent video by Great Big Story.

A monk standing at Abuna Yemata Guh, a rock-hewn church in Ethiopia. (Photo: Charlie Fleurene viaWikimedia Commons,CC 4.0)