The text on the building advertisement clearly says "Der erste Kindergarten Österreichs für kleine Forscherinnen & Entdeckerinnen," which points directly to Austria. The architecture is modern, and the presence of a tram line suggests a major city. The "Sportunion" branding is also very common in Austrian urban centers. Given the specific signage and the modern urban layout, I am quite confident this is in Vienna.

I suspect this is in Vienna, Austria. I am 85% sure.

then: guess