> Designed by US architecture studio Morphosis, it would be 500 metres tall but only 200 metres wide, with the gap in between filled by densely packed urban fab

> Designed by US architecture studio Morphosis, it would be 500 metres tall but only 200 metres wide, with the gap in between filled by densely packed urban fabric alongside trees and plantlife and a high-speed rail network embedded underground. From the linked https://www.dezeen.com/2022/08/08/sustainability-liveability-the-line-saudi-170km-city-naive/ https://www.dezeen.com/2022/08/08/sustainability-liveability... I mean, I have no idea about architecture and city planning but 200m, a single building sounds awfully small. But just a little wiggling of, say (170km/2 = 85km) x 400m or even (170km/3 = 57 km) x 600m would have made it so much more compact and, to me, still 100% captured the spirit of "a very long line along some train tracks".