This document discusses green building, which aims to reduce environmental impact through resource efficient and environmentally friendly design, construction, operation, and demolition. It achieves this through improving indoor air quality, conserving natural resources by reducing pollution, and efficiently using energy, water and other resources. Benefits include reduced urban heat effect, improved health, water conservation, and increased building durability. Principles of green building focus on sustainable site selection, efficient structure design, energy and water efficiency, using sustainable materials and indoor environmental quality. Recent LEED certified green buildings in Bangladesh are highlighted.