For many years it was assumed by scholars that the original James Fort constructed by English colonists in 1607 at the site of Jamestown, Virginia (the first permanent English colony in America) had long been claimed for oblivion by the waters of the nearby James River. Not so, according to archaeologists. Since 1994, the Association for the Preservation of Virginia Antiquities, in conjunction with the University of Virginia, have conducted excavations that revealed thousands of artifacts and soil features clearly identified with the Fort. You can follow the ongoing work and discovery involved in this investigation by going to the website.
For more reading on Jamestown and the Jamestown Rediscovery project:
Jamestown Rediscovery 1994 - 2004