Westpac Place is a 33 storey commercial building on Kent Street, which is the Australian headquarters for Westpac Bank. The roof features a weather beacon barometer inside an illuminated white glass tower. The eight red, light emitting diode (LED), illuminated bars on the north and south faces represent 990 hPa to 1025 hPa, in 5 hPa increments. As pressure rises or falls, the LED bars ripple in an upward or downward direction to provide real time information on barometric pressure changes. Low pressure usually indicates inclement weather and high pressure usually indcates clear weather. The illumination level of the LED bars and tower is controlled by a roof mounted photosensor, with the brightest levels in the middle of the day, dimming at dusk and reaching the lowest level after dark.