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

President Trump has directed the reopening of Alcatraz, the infamous former prison, sparking curiosity about its history. Originally a military fort, it became a federal penitentiary in 1934, housing notorious criminals like Al Capone.

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,