A window with multiple elements which are suitable for installation in a building exterior wall as part of designing and/or retrofitting building façades is disclosed. The building structure comprises one or more movable members movably attached to a frame member where the frame member is secured in a wall opening. The building structure may further comprise a sash member attached to the one or more movable members. The connection of these members may be such that an enclosure is created when the building structure is in an extended or open position.