This document provides an overview of tourism, biodiversity, and sustainable development. It discusses how tourism relies on ecosystem services and biodiversity but can also negatively impact the environment. It then outlines various good practices for promoting sustainable tourism, including developing policies and strategies, implementing legal tools, monitoring impacts, providing economic incentives, building capacity, and engaging in promotion and marketing. Specific case studies from countries like Bulgaria, Croatia, Egypt, China, Costa Rica, Brazil, and Mexico are also summarized.