The hidden systems and networks beneath our cities—such as water supply lines, electrical grids, and communication cables—are often complex and sensitive. These infrastructures are crucial for daily life, yet much about their design, maintenance, and vulnerabilities remains unknown to the general public. Understanding these systems is important for both urban planning and national security, as they can be affected by natural disasters, cyberattacks, or aging technology. Despite their importance, the details of these underground networks are not widely accessible. Many reports and studies on the subject are behind paywalls or require subscriptions to specialized publications. For instance, some articles on infrastructure are only available to readers who have subscribed to certain platforms, limiting public access to critical information. This lack of transparency raises questions about how well governments and private entities are managing these essential systems. Experts argue that greater public awareness and access to information could lead to better oversight and more resilient infrastructure. However, without open access to detailed data, it is difficult for citizens to fully understand the risks and benefits associated with these hidden networks. In recent years, there has been a growing interest in making infrastructure more transparent and accessible. Some organizations are working to provide open-source maps and data that show the locations of key utilities and systems. These efforts aim to empower communities and encourage more informed discussions about the future of urban development and public safety.