1. Smart Cities

IBM, Microsoft, and Cisco, among the world's largest tech corporations, are heavily investing in megaprojects to develop smart, sustainable cities. These cities are more complex and interconnected than other megaprojects, necessitating extensive planning and preparation before construction can begin. By 2025, the worldwide smart city market is predicted to increase by 20.5 percent, to $2.5 trillion.

Masdar City in the United Arab Emirates, Songdo International Business District in South Korea, Hudson Yards in New York City, and India's Delhi-Mumbai Industrial Corridor are among the most significant worldwide megaprojects in the works. These projects, which range in cost from tens of billions to over $100 billion, are expected to have an impact on the economy, improve infrastructure, and contribute to environmental health.