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    The Main

    Montreal's Cultural Directory

    Help us improve! Share your thoughts on how we can make your experience better.

    Leave feedback

    For partnerships and collaborations:

    partnerships@themain.com

    Content

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      History Lesson

      The Gothic Mansion Where the CIA Broke Minds with LSD and Electroshock

      The Ravenscrag manor housed the Allan Memorial Institute, where patients seeking help became victims of Cold War experiments.

      ByJ.P. Karwacki

      December 5, 2025 · 11 min read

      The Gothic mansion where the CIA broke minds with LSD and electroshock
      "Ravenscrag", Hugh Montagu Allan's residence, Montreal, QC, 1901. | Photograph: Wm. Notman & Son / McCord Stewart Museum

      The Main is reader-supported. Subscriptions are what keep us independent. Five dollars a month — the restaurants, the guides, the weekly bulletin, and what to do each weekend. Support us today.

      There's an Italianate villa perched on the slope of Mount Royal, just above the Golden Square Mile, that was built in 1863 for railway baron Sir Hugh Allan: The Ravenscrag mansion, all stone grandeur and Victorian ambition speaking to old money and older power. For decades, it housed the Allan Memorial Institute, where some of the city's most prominent psychiatrists treated patients seeking help for depression, anxiety, grief.

      Those patients didn't know that the institute's director was running a parallel operation funded by the CIA, conducting experiments so brutal they would destroy lives, shatter families, and eventually provide the blueprint for torture techniques used at Guantanamo Bay and CIA black sites around the world.

      The respected Montreal hospital they visited would become ground zero for one of the darkest chapters in Cold War history, and more than 70 years later, neither the CIA nor the Canadian government has ever formally apologized for what happened.

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      Follow on Google
      History Lesson

      The Gothic Mansion Where the CIA Broke Minds with LSD and Electroshock

      The Ravenscrag manor housed the Allan Memorial Institute, where patients seeking help became victims of Cold War experiments.

      ByJ.P. Karwacki

      December 5, 2025 · 11 min read

      The Gothic mansion where the CIA broke minds with LSD and electroshock
      "Ravenscrag", Hugh Montagu Allan's residence, Montreal, QC, 1901. | Photograph: Wm. Notman & Son / McCord Stewart Museum

      The Main is reader-supported. Subscriptions are what keep us independent. Five dollars a month — the restaurants, the guides, the weekly bulletin, and what to do each weekend. Support us today.

      There's an Italianate villa perched on the slope of Mount Royal, just above the Golden Square Mile, that was built in 1863 for railway baron Sir Hugh Allan: The Ravenscrag mansion, all stone grandeur and Victorian ambition speaking to old money and older power. For decades, it housed the Allan Memorial Institute, where some of the city's most prominent psychiatrists treated patients seeking help for depression, anxiety, grief.

      Those patients didn't know that the institute's director was running a parallel operation funded by the CIA, conducting experiments so brutal they would destroy lives, shatter families, and eventually provide the blueprint for torture techniques used at Guantanamo Bay and CIA black sites around the world.

      The respected Montreal hospital they visited would become ground zero for one of the darkest chapters in Cold War history, and more than 70 years later, neither the CIA nor the Canadian government has ever formally apologized for what happened.

      Free account required

      For readers who care about Montreal

      Create a free account to read this story and access 3 articles per month, plus our weekly Bulletin.

      Independent. Local. Reader-supported.

      or

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      Comments

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      Share your thoughts and join the conversation. Please be respectful and constructive.

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