In response to increasing environmental concerns, the global tourism industry is at a critical crossroads, requiring a shift to sustainable practices for long-term viability. This paper explores the concept of eco-friendly destinations. Using detailed global case studies of Slovenia and its capital Ljubljana, Gothenburg (Sweden) and Costa Rica, successful sustainable tourism strategies and their impact on the complex interplay of social, ecological, and economic factors are examined. The study also underlines the central role of sustainability in urban destinations and highlights the comprehensive approaches of Ljubljana and Gothenburg, which are recognized as successful in sustainability. The findings underline the global importance of sustainable tourism practices and highlight the challenges, opportunities and the need for collaboration between different stakeholders. The practical implications and originality of the paper lie in providing insights and recommendations that can help destinations worldwide in pursuing a balanced and sustainable tourism model. In light of ongoing management challenges, the paper highlights increased collaboration between residents, the public and private sectors, and other stakeholders as essential to promoting sustainability. The tourism industry is facing a crucial phase where environmentally friendly strategies are not only a moral obligation, but also a strategic imperative for the durable competitiveness and resilience of destinations. The paper strives to give a complete overview and recognize that sustainable practices are not only ethical, but also essential for the future success of tourism.