Quote Originally Posted by cait sith
I'VE GOT IT!
There are four of us:
One ruled by an unknown master
Trabia Garden

One by the ocean tide
Balamb Garden

One holds the gates of Hades
Galbadia Garden That's where you get Cerberus.

One hangs on the wall
The garden painting in Ultimecia's Castle, Vividarium
You got it Cait Sith!

The answer is Gardens. Your go.

BTW, I agree than Eden is an organic Garden but it's a matter of interpretation more than cannonical game information so I left her out.