140 St Georges Terrace, Modern skyscraper in Central Business District, Perth, Australia

140 St Georges Terrace is a 30-storey, 131-metre skyscraper at the corner of St Georges Terrace and William Street. Completed in 1974, it has a facade largely unchanged apart from a two-storey, 15-metre bronzed-glass canopy at ground level, whose glass is coated with small white dots that shade by day and, with uplighting, produce a white ceiling effect at night.

AMP bought the Carr's Corner site in 1910 and built the six-storey sandstone AMP Chambers there in 1915, designed by Oldham and Cox. Demolition began in May 1972 and the 30-storey tower was completed in 1974, opening in 1975. It was Perth's tallest completed skyscraper only from late 1974 until January 1975, when Allendale Square was finished. AMP used it as state headquarters until 2002, and BlackRock and Primewest bought it in 2021 for A$260 million.

A bronze statue weighing 910 kilograms depicting family values stood atop the original AMP Chambers before being relocated to Herdsman Lake.

The tower is a working office building, not a public attraction, and its 29th-floor observation deck closed after the BankWest Tower (1988) and Central Park (1992) blocked its views. What a passer-by can see from street level is the forecourt open space and public seating that AMP provided in exchange for planning concessions, plus the 15-metre bronzed-glass canopy added in 2003, whose white dots shade by day and glow under uplighting at night.

The tower was engineered with a central service core and columns positioned at the perimeter, creating open floor plates without interior support columns. This clever design allowed businesses to reconfigure their spaces freely and adapt layouts to their needs.