Unfortunantly you cant go to other regions in Pokemon diamond and pearl. its not like leafgreen,firered,gold,silver and crystal version where you travel to different regions. You can't, Sinnoh is the only region available in the game.
No you cannot go to other regions in Pokemon Pearl or Diamond version but in Pokemon Heart Gold and Soul Silver you can go to the Jotoh region.
walk
you can only go to kanto and johto
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go to canalave city and go to the Pokemon mart and talk to the other guy, if not there, try another town
no but you can migrate Pokemon from other regions so your pokedex gets larger
No you cannot go to other regions in Pokemon Pearl or Diamond version but in Pokemon Heart Gold and Soul Silver you can go to the Jotoh region.
You have to beat the Pokemon League and get the National Pokedex and go underground and dig for one.
The entirety of Pokemon Pearl and Diamond is set in the Sinnoh region. There is no way to revisit any of the other Pokemon world regions.
There are no other regions accessible* other than the starting Sinnoh region. *Excluding other games.
It is very true i beat the whole game!
No, you cannot go to other regions in Pokémon Emerald.
You cannot go to any other regions in Pokémon Black.
No, but you can find Pokemon's from other regions
walk
NO
No. If you want to go to other regions you must buy other Pokemon games.