At the beloved attraction in San Francisco Bay, visitors could scarcely believe President Trump had suggested turning Alcatraz back into a penitentiary.

President Trump is dreaming of reopening Alcatraz as a prison, but making it happen could fare more like a nightmare with a really expensive price tag. Why it matters: The project, which would heavily alter San Francisco's landscape and tourism economy,

Many California officials responded with a range of ridicule and concern about reopening the nearly century-old prison. State Sen. Scott Wiener, a Democrat, called it “unhinged.”