Williamsburg is one of my favorite places in the United States. It's full of history as it was initially the capital of Colonial Virginia, and it is part of the Historic Triangle, along with Jamestown and Yorktown.
I love the historic part of this town: it's like going back in time. I enjoy walking around in Colonial Williamsburg and wander in the shops of Merchant Square.
If you're looking for a day trip (or longer), think about going to Williamsburg :)
I am a French expat living in the USA, more precisely