About the location
The interior is a riot of gold leaf, intricate carvings, and a stunning vaulted ceiling painted by Mattia Preti. One of the most unique features for photographers is the floor, which is composed of nearly 400 marble tombstones of Knights of the Order of St. John, creating a vibrant mosaic of heraldic symbols and inscriptions. The interplay of light from the high windows creates dramatic shadows and highlights across the gilded surfaces. Photographers will find the Oratory particularly compelling, as it houses Caravaggio's masterpiece, 'The Beheading of Saint John the Baptist,' providing a somber but powerful subject.