Westpac House (formerly Santos House and State Bank Building) is the tallest building in the South Australian capital of Adelaide. It is a 31 storey office tower, reaching 132 metres at its roof, with each level approximately 4 metres in height. It is set back from Currie Street near the intersection with King William Street, and is connected to two adjacent office buildings on Currie Street. It has four street frontages, and various pedestrian thoroughfares.