The first gym in Pokemon diamond is in Oreburgh City
the sixth gym is in canalave city
you earn them
You don't get your own gym ever.
in the forest by the 2 gym leader
the fifth gym on Pokemon diamond is the one in herthome city,
The first gym in Pokemon diamond is in Oreburgh City
The seventh gym in Pokemon Diamond, Pearl, and Platinum is located in Snowpoint City, which is to the East of Lake Acuity.
The Pokémon the second Gym Leader has in "Diamond" are Cherubi, Turtwig and Roserade.
hearthome gym. you know where that is.
you beat the gym leader
He is in the lighthouse
the sixth gym is in canalave city
3rd gym
No
you earn them
You don't get your own gym ever.