- ...that since Thomas Jefferson designed his home, Franklin D. Roosevelt's Top Cottage (pictured) has been the only house designed by a U.S. President, although no President has stayed there overnight?
- ... that several fires and the construction of the Croton Aqueduct shaped the Downtown Ossining Historic District of New York?
- ... that the Second Baptist Church is the only Greek Revival church remaining in Poughkeepsie, New York?