Trump has called for the reopening of Alcatraz, which was designated a museum and historic site after closing more than 60 years ago.

To some in this city, turning Alcatraz back into a prison would be a crime. “The Rock” closed 62 years ago, and San Francisco has channeled the public’s macabre fascination with life inside the notorious prison to turn it into one of the city’s top tourist attractions.

Trump Jr. floated the idea of turning Alcatraz back into a prison, but it seemed he was making one of his attempted jokes on social media.