UTL is about exploring past, present and future urban technologies in science and fiction, etc...
https://en.wikipedia.org/wiki/Paris
https://www.reddit.com/r/CityPorn/comments/1qgdq8j/paris
https://en.wikipedia.org/wiki/Paris_metropolitan_area
https://en.wikipedia.org/wiki/La_D%C3%A9fense#History
https://en.wikipedia.org/wiki/List_of_tallest_buildings_and_structures_in_the_Paris_region#Tallest_buildings_and_structures