No, you can only visit Kalos in the Pokémon X and Y games.
Johto region. It's the generation II, aka the second region, the one right after Kanto.
Yes You Can Get A Pikachu In Pokemon X and Y.
The Legendary Pokemon available in Pokemon X/Y are:Xerneas (X only)Yveltal (Y only)ArticunoZapdosMoltresMewtwoZygarde
Pokemon X and Y are sold at MSRP of $39.99 (CAD)
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Prof. Sycamore will give you the oval charm in Pokemon X and Y.
Pokemon capable of learning Psywave as an Egg Move in Pokemon X and Y are Latios (Pokemon) and Gastly (Pokemon).
Just like the regular Pokemon In Kanto.
I believe X is stronger, but Y looks cooler.
*Mew is not catchable in Pokemon x and y, but you can get him online from wondertrades and such. Mewtwo however, is catchable and you can find him in the cave in pokemon village.
You cant go to kanto in the sinnoh Pokemon games.
You can't a pokemon from x or y version into pokemon b,w,b2,w2 because mega evoulution,new pokemon and the new type, fairy,but you can put pokemon from b,w,b2,w2 into x and y using pokemon bank and pokemon transport