The digitalization of urban, suburban and rural areas is a crucial step towards creating smart, efficient, and sustainable cities and regions. Urban Digital Twins offer an innovative solution for visualizing and analyzing municipal data in real time and making fact-based decisions. Digital Twins can be used to simulate and better understand decision-making options, making them comprehensible even to non-experts. As a result, Urban Digital Twins offer the opportunity to utilize resources more efficiently, improve citizen participation and promote sustainable development.