/diy/ - Do It Yourself

Anyone ever built a gas fire pit?

Moving into a new place, and is setup for a new fire pit, but I do not know how I am going to go about building it. The builders original plan was to have one circle as a firepit, and the other as a waterfall, but I am thinking about combing the two to have a double fire on water pit, etc, just don't know how I want to go about it. It has the electrical, natural gas, and water line all right there, as well as drains at the bottom of the enclosures.

Mainly looking for ideas and advice, and would much rather prefer to do it myself, as these things can get extremely expensive in a hurry. Wouldn't mind buying certain parts pre made, but have the ability to fabricate if need be.

Help me /diy/, you're my only hope.