- ... that Old Albany Post Road (pictured) in Philipstown, New York, is one of the oldest dirt roads still in use in the United States?
- ... that it has been difficult to establish when the Oliver Barrett House near Millerton, New York, was built since there are no records of it until 14 years after its likely construction date?
- ... that the four rooms on the first floor of Hiddenhurst outside Millerton, New York, are decorated in different architectural styles?