The soaring grandeur of the interior of Naples Cathedral, with richly decorated arches, domes, and gilded details, draws the eye upward. The figures within the vast space emphasise the scale of the architecture and its atmosphere of reverence. Collins shows his usual command of light and atmosphere, using delicate watercolour washes to convey the luminous quality of the interior. Fine architectural ornament stands against softly blended tones, giving a sense of grandeur alongside a reverent stillness.