Optus Centre, Office skyscraper in central Melbourne, Australia

The Optus Centre is a 153-metre office tower at 367 Collins Street in Melbourne, completed in 1975 with 34 floors. Its main foyer and mezzanine hold cafes and formerly a branch of the Commonwealth Bank. Major tenants include Optus, Sportsbet, the Australian Institute of Company Directors, Insync and an Australian Red Cross Lifeblood donor centre.

The tower was completed in 1975 and briefly held the title of Melbourne's tallest building before being surpassed just two years later. It was built during a period of rapid construction that reshaped the city's skyline throughout the 1970s.

The Optus Centre's tenancy mixes commerce and community: Optus, Sportsbet, the Australian Institute of Company Directors and Insync occupy offices, alongside an Australian Red Cross Lifeblood donor centre. The main foyer and mezzanine hold cafes, and a former Commonwealth Bank branch once served the building. The name comes from its anchor tenant, the telecommunications company Optus.

The ground and mezzanine floors are open to visitors and offer cafes and seating in the main foyer. The tower sits in the heart of Melbourne's city center, making it easy to reach on foot or by public transport.

A pair of peregrine falcons has nested on the building's roof for years, and a screen in the foyer shows live footage from the nest. This means you can watch one of the world's fastest birds raising its young without leaving the lobby.