The "scuplture" is a Tetra Wonder, who makes these for 10 and 20 gallon tanks. I found it on closeout at petsmart for 14 bucks. They retail for like 40 dollars. They have one that looks like a stump but they did have those in the store, so I went with the rock. The filter allows the water to spill over the front of the unit to look like a waterfall.
I have some cats and female bettas in it. Not sure what other plants I will add, just have some Naja and anacharis for now. Will probably add some of my small anubias this weekend. Not sure about other fish, but would like to add something exotic.
Please let me know on other ideas.