1. Introduction
  1.1 Background and significance
  1.2 Research objectives
2. Understanding adaptive reuse
  2.1 Definition and concept
  2.2 Benefits and challenges
  2.3 Sustainability considerations
3. Preservation of historical significance
  3.1 Historical research and documentation
  3.2 Restoration and conservation techniques
  3.3 Balancing preservation and modernization
4. Integration of modern functionalities
  4.1 Structural modifications and retrofitting
  4.2 Accessibility and universal design
  4.3 Technology integration
5. Case studies of successful adaptive reuse projects
  5.1 Tate Modern, London
  5.2 The High Line, New York City
  5.3 The Gasometer, Vienna