A building includes a tile roof including a plurality of courses of tiles and a roof-cover above which the tiles are positioned, a ceiling below the roof, and a skylight apparatus. Each tile engages adjacent tiles according to a repeating engagement structure. The skylight apparatus includes a main body in place of one or more of the tiles of the tile roof and engages adjacent tiles substantially according to the repeating engagement structure, at least one window, a tubular body below the main body and extending through an aperture in the roof-cover, a light conduit extending downward from below the tubular body and defining an inner passage, and a bottom translucent member at an opening in the ceiling and below a bottom end of the light conduit. Light is able to shine through the window, the inner passage, and the bottom translucent member into a room below the ceiling.