there's a tank at my LFS that is just pure awesome. It has a large piece of driftwood that extends above the waterline with a ledge. In the tank there are a couple very small turtles swimming around and they go up to the ledge occasionally to sun. they are kept with baby bala sharks, guppies, red nosed tetras (i think that's what they're called), and some small cories. It's densely planted with small cover plants and some anacharis, amazon sword, and other plants. I wouldn't quite call it a palauderium (or however you spell it) because the only land part is the ledge connected to the driftwood. The substrate is the black ecocomplete... the black color really brings out the green of the plants and turtles and the colors of the fish. If you did this it truly would be AWESOME.
The tank is some kind of cube, one of the larger ones. perhaps a 24