you can't
No, they removed Lavender Town in Pokemon Diamond, Pearl, and Platinum.
the wonder card can only be obtained through a Nintendo event
you go to solance town
There is no such thing. Wonder Tiles are in Pokemon Mystery Dungeon, though, if that's what you mean.
Oreburgh Town
There is no town called Twinleaf Town in Pokemon Leaf Green, only in Pokemon Diamond and in Pokemon Pearl.
walk through walls
There are Pokemon Centers in every town/city.
Sandgem town is the second town in Pokemon Diamond/ Pearl/ Platinum. It is the home of Professor Rowan
There is no dewford town in pearl. Only in Ruby Sapphire and emerald. correct me If I am wrong
solaceon town has a daycare in Pokemon diamond and pearl
Solaceon Town is in Diamond, Pearl and Platinum, not Pokemon White.