4. Copenhagen, Denmark
Copenhagen is a city that epitomizes modern urban living. It is renowned for its sustainable practices, efficient public transportation system, and commitment to cycling as a mode of transportation. The city’s modern architecture, such as the impressive Black Diamond Library and the futuristic Gemini Residence, showcases its design prowess. Copenhagen’s thriving culinary scene, emphasis on work-life balance, and focus on the quality of life make it a model modern city.