Dieses Land ist schön.
Okay, maybe I am having a very bad day, but, why Dieses and not Dies? Land is neuter, oder?
yes, in that case "das" would be a demontrative pronoun, too, as you put emphasis on one particular thing. When you look at what I just typed, you have a demonstrative "that" right there. "In that case" can be translated with "in diesem Fall" (it's dative because of the preposition "in") but also with "in DEM Fall" and you would probably put a bit more emphasis on the "dem" when you're speaking. Am I making sense?