https://es.wikipedia.org/wiki/D%C3%A1rsena_del_Guadalquivir#...
The river used to run through the city centre, and flooded a lot. So they diverted most of the flow past the city, leaving the stretch inside effectively a huge dock.
https://es.wikipedia.org/wiki/D%C3%A1rsena_del_Guadalquivir#...
https://es.wikipedia.org/wiki/D%C3%A1rsena_del_Guadalquivir#...
The river used to run through the city centre, and flooded a lot. So they diverted most of the flow past the city, leaving the stretch inside effectively a huge dock.