The conversation between human and AI assistant.
What are the common features of the Rockefeller Center and Alcatraz?
What were the main purposes of these places?
The Rockefeller Center was built in the 1930s as a commercial and cultural center for the city of New York. Alcatraz, on the other hand, was originally built as a military fortification but was later turned into a federal prison in the early 20th century.