Forget the soaring cathedrals of Europe; one of the most intriguing spiritual landmarks is tucked away right in Covington, Kentucky. Meet Monte Casino, officially recognized as the smallest church in the world.
Built in 1901 by Benedictine monks, this tiny stone chapel measures just 6 by 9 feet. It wasn't built for a massive congregation, but as a quiet, immersive sanctuary for the monks working the surrounding vineyards. Though it can only fit about three people at a time, the craftsmanship—from the hand-carved stone to the stained glass—is as detailed as any grand basilica.
See it in the video below.