Mary Washington College (currently the University of Mary Washington), led by Professor Doug Sanford, tested portions of the Enchanted Castle in 1985. The testing done by the Department of Historic Preservation substantiated the earlier evidence, but exact archaeological and architectural plans of the structures remain undetermined.
MWC Excavations, dating from 1985 to the present, have focused on the Enchanted Castle, sampling the site and landscape. Excavations have been conducted every summer between 1985 and 1992, including August to December of 1995. The work has been slow due to lack of funding, but the team has found a small segment of exterior palisade of Fort Germanna, as well as the footprint of the majority of main house. These findings entailed two dependencies, two hyphens, numerous landscape features, and artifacts. The archaeological survey consisted of systematic subsurface sampling and controlled surface collection. Shovel test pits were made at 60ft intervals along aligned transets 60ft apart. This was where the teams obtained the majority of their
artifacts. A total of thirty-one sites were found, including twenty-one historic areas, seven prehistoric, two which were both historic and prehistoric. Of these sites, five were 18th century areas and ten were 18th to early 19th century. Although a great deal of artifacts were found and plans confirmed, positive evidence of Fort Germanna was not identified, only later dating activities.

The excavations to date have revised the plan of the Enchanted Castle, but the history of the site has been amended. The building date is supported as ca. 1723-24, but a variety of materials exist, suggesting several building phases. A variety of domestic materials also indicates an earlier use of the structure. Architectural remnants, their construction techniques, and the structural relations of the buildings gives the best representation of spatial divisions.
Enchanted Castle: NW Building Excavation
Fireback found on site
Excavation
Source: Quarterly Bulletin. "Archeological Society of Virginia." Volume 44, Number 3, September 1989.