Jon M.
Google
I went to the Lost Roanoke Colony and the Visitor Center, both of which are free. I lucked out that a guided tour had just started when I arrived so I joined that, the guide was very knowledgeable and it was a good tour. There's a short trail you can walk around the old colony grounds takes about 15-20 min with some informational signs to read throughout. The visitor center has additional info about the site, the colonists, and the surrounding area/inhabitants also has some cool artifacts.