In 2021, Saudi Crown Prince Mohammed bin Salman revealed the country’s plans to build The Line, a smart linear city that will be constructed vertically, have no roads or cars and run purely on renewable energy. Now, the Saudi government has released image renders of what The Line could look like once it’s done. The city was designed to only be 200 meters (656 feet) wide, but 500 meters (1,640 feet) tall and 170 kilometers (105 miles) long. It will house multiple communities encased in a glass facade running along the coast and will eventually be able to accommodate up to 9 million residents. The Line’s designers envision a city wherein facilities are just a five-minute walk away from people and where residents can organically bump into each other as they go about their daily errands. While it will have no roads and won’t be able to accommodate cars, it will have a high-speed rail for end-to-end transit that will take 20 minutes. It will also rely on a natural ventilation system to make sure residents enjoy the ideal climate all year round. 

This is what Saudi Arabia’s 100-mile long emission-free smart city could look like | Engadget