An entire day, if you want to see everything at a comfortable walking pace. Since admission is free, if you have more than a day in the city, you can make at least two separate visits so you don't get too overwhelmed.
It depends on how much you want to see and read about.
I spent a couple hours and didn't see half of it
Thanks! Your answer is awaiting moderation.
Do you except artifacts donations such as historical pins or a painting of the pledge of allegiance?
Read More