Article 6Historical and Architectural Preservation Subtitle 1 Definitions; General Provisions §§ 1-1 – 1-4 Subtitle 2 Commission for Historical and Architectural Preservation §§ 2-1 – 2-11 Subtitle 3 Designation of Districts §§ 3-1 – 3-9 Subtitle 4 Designation of Landmarks §§ 4-1 – 4-8 Subtitle 5 Designation of Potential Landmarks §§ 5-1 – 5-7 Subtitle 6 Inventory of Historic Places §§ 6-1 – 6-3 Subtitle 7 Subdivision of Designated Properties §§ 7-1 – 7-3 Subtitle 8 Alterations, etc., to or Affecting Properties §§ 8-1 – 8-15 Subtitle 9 Judicial Review and Enforcement §§ 9-1 – 9-8 Subtitle 10 [Reserved] Subtitle 11 Preservation Districts §§ 11-1 – 11-40 Subtitle 12 [Reserved] Subtitle 13 Landmark List – 1970s §§ 13-1 – 13-55 Subtitle 14 Landmark List – 1980s §§ 14-1 – 14-41 Subtitle 15 Landmark List – 1990s §§ 15-1 – 15-13 Subtitle 16 Landmark List – 2000s §§ 16-1 – 16-47 Subtitle 17A Landmark List: Exteriors – 2010s §§ 17A-1 – 17A-47 Subtitle 17B Landmark List: Public Interiors – 2010s §§ 17B-1 – 17B-4 Subtitle 18A Landmark List: Exteriors – 2020s §§ 18A-1 – 18A-9