Taller in Spanish has nothing to do with height. Taller is a workshop.
One of the common jokes around here to tell visitors is that when they see a “Taller Mechánico” sign it means that they have a mechanic that is tall enough to work on four wheel drive vehicles. But it really just means that it is a mechanic’s shop.
“Atelier” means “studio,workshop,repair shop”(Larousse’s French-English Dictionary)Atelier-> taller. Pretty close?