Germany

for sure it is the miniature wonderland in Hamburg Germany!!! external link

Ithink you will find this scene at "Costas del Garraf" between Castelldefels and Sitges

the countryside is real somewhere in spain, the photographer fergus stothart used the tilt shift effect (and a lot of photoshop) to create that miniature-effect. some examples including the mazda ad: external link

I think -
Miniaturwunderland Hamburg
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Its some sort of a Miniatur-Museum for all this stuff you can see on the Picture.
external link

well, the train does look Spanish, so it could well be a real spot on the Spanish coast.

It could be anywhere in a TV studio... I guess... mazda=Japan