George Washington's Gristmill at Mount Vernon 

I find this so fascinating to know that products are still made at George Washington's estate today. I'm going to order some cornmeal. I only wish the blacksmith had more products available for purchase, too. Despite this, it's just nice knowing that President Washington's estate is functioning today as if he were still with us. This is so important for our future generations.

Great art work.

Narrative explanation with explanation and context would be helpful.

Are there any part or parts of this gristmill still original?

Seems complex for it's day.