Abstract: A cooling tower has a plurality of cooling regions with each cooling region being constructed in a cross flow or counter flow configuration for allowing air to pass into the path of falling water within that region. Each region contains a fill bundle composed of twisted fill elements. Each fill element consists of an elongated substantially flat member which is twisted normally about its longitudinal axis. A plurality of the fill elements are connected in rows and placed in the path of the air circulation. Alternate rows will be offset from adjacent rows disposing the elements at apices of an isosceles triangle pattern to obtain equal spacing between adjacent elements and create a circuitous route through which the cooling air must pass. The spiral configuration of the elements provides centrifugal action which disperses the water and air from one element to adjacent elements, thus providing more intimate contact between the water and the cooling air.