In 18th Century London, one of the tourist attractions was a working Mental Hospital!
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The Bethlem Royal Hospital is a hospital for the treatment of mental illness. Founded in 1247, it's still running today, so you can imagine it has a long and illustrious history. It's Europe's first and oldest institution to specialize in mental illness.
A curious part of this history is that in the 1700s, the hospital was considered a tourist attraction. People would go in to be entertained to get a feeling of excitement from seeing a 'freakshow.' It was so popular, that it became a destination on the London Tourist Trail, along with the London Tower, the Zoo and the London bridge.
Learn more about this at the source.
