The clock faces are 43 m × 43 m (141 ft × 141 ft), the largest in the world. The roof of the clocks is 530 m (1,740 ft) above the ground, making them the world's most elevated architectural clocks. A 71-metre-tall (233 ft) spire has been added on top of the clock giving it a total height of 601 m (1,972 ft).