Built in 1929, it was previously the home of a Canadian Pacific Railway steam locomotive repair facility and operated as such until May 13, 1988.

The John Street Roundhouse is designated a National Historic Site and is owned by the City of Toronto.

The company operates the annual Steam Whistle's Roundhouse Winter Craft Beer Festival (RHCBF).

[3] The brewery was the first customer of renewable energy project, the Deep Lake Water Cooling System.

[5] In 2004, Steam Whistle Pilsner was voted best beer in the Greater Toronto Area at the Golden Tap Awards.