Which part of Germany is best for learning standard German?

That's a question that gets asked a lot with a language with as many regional variants as German, and this page provides an interesting answer: parts of the country that speak a type of German close to that one would find in textbooks aren't necessarily the best places to learn the language, because the closer to standard German you get the easier it is for them to blend together. It therefore concludes that areas where Low German (the north) are better because there Low German and High German have traditionally been treated as separate languages, and thus the distinction between them is clearer.