Maryland Code, Land Use § 8-104

(1) the construction, reconstruction, alteration, moving, and demolition of sites or structures of historical, archaeological, or architectural significance;

(2) the construction, reconstruction, alteration, moving, and demolition of sites and structures within districts;  and

(3) the appurtenances and environmental settings of sites and structures within the limits of the local jurisdiction.

(1) safeguard the heritage of the local jurisdiction by preserving sites, structures, or districts that reflect elements of cultural, social, economic, political, archaeological, or architectural history;

(2) stabilize and improve the property values of those sites, structures, or districts;

(3) foster civic beauty;

(4) strengthen the local economy;  and

(5) promote the preservation and appreciation of those sites, structures, and districts for the education and welfare of the residents of each local jurisdiction.