The Gateway Towers

Take a walk down Beach Road, and you'll think your eyes are playing tricks on you. Depending on your angle of vision, the 37-storey, 150-metre skyscraper complex built in the early 1990s also doubles as an optical illusion. Both twin towers – named The Gateway East and The Gateway West – form trapezoidal shapes, which give the illusion of being "paper-thin" when viewed from certain angles.