Abstract: A sashless bay window which has a sill (20) with a curved front (22), a pair of jambs (32) and a header (34), all attached together on the ends forming a frame. A number of curved muntins (42) are joined together inside the frame creating a horizontal sub-division with vertical straight muntins (44) connected at the intersection forming a series of rectangular or square openings. Curved window panes (46) either of a uniform thickness or with beveled edges are mounted into the openings with glazing putty (48) or stops (50) completing the window. In a second embodiment the glazing and muntins (44) and (62) are straight forming a segmented arc curve. In either embodiment, a sash is not employed in the window construction.