To be eligible for designation as an historic district, historic site or historic landmark, an area or property shall possess one or more of the following characteristics:
A.
Buildings, structures, or sites importantly associated with significant historic personages and/or historic events.
B.
Buildings, structures, structural remains and sites which illustrate examples of historical architectural styles valuable for study of a period or method of construction or a single notable structure representing the work of a master builder, designer or architect.
C.
Structures, buildings and sites which contribute to the visual continuity of the historic district.
D.
Those sites, buildings, structures or areas on or eligible for inclusion on the National Register of Historic Places.