 These discoveries confirmed that the original level of the land was seven or eight feet lower than it is now, or about four feet lower than the current Tannery doorway opening.”"

The Tannery was restored between 1968–1971 by John Milner Associates as an historic site interpreting the 18th century tanning operations.After restoration was complete the building was open to the public for tours and educational programming from the late 1970s.Continued restoration from grants received allowed the opening of the vat room in 2001 which had previously not been accessible due to deterioration of the viewing platforms.