The article discusses five major global infrastructure projects leading the way towards a sustainable future. NEOM in Saudi Arabia exemplifies sustainability with advanced renewable energy solutions, AI, IoT, and green hydrogen technologies. Grand Paris Express focuses on green practices and inclusivity through automated metro systems and sustainable construction. HS2 in the UK prioritizes advanced construction techniques and sustainability to boost economic growth and support the country's net-zero emissions goal. RESCU project in California modernizes wastewater management with advanced tunneling methods, AI integration, and renewable energy sources. These projects set new standards in technology, sustainability, and economic impact, showcasing the potential for innovation in global infrastructure.