The Church of Immaculate Conception is a unique church in Rome, Italy. The church's full name is Santa Maria della Concezione dei Cappuccini, and it was commissioned in the early 1600s by Pope Urban VIII whose brother was a Capuchin friar. When the church was completed, the monks who moved here took with them the exhumed bodies from their old church. The monks then began transforming bones of these deceased monks, as well as the bones of poor Romans and other deceased, into works of art. The church attracts visitors because of this interesting crypt underneath the church where you can see entire walls covered in bones.
In some places you will also see entire skeletons of monks that were left intact and dressed in Franciscan robes. In other sections of the crypt, you'll see picture frames made of bones, walls covered in skulls, and other elaborate designs.