Growing herbs together in a circle can soften the edges of hardscaping. Herbs make wonderful ornamental features in borders or in their own self contained space. Beyond being just pretty, herbs are valued for their medicinal and culinary properties.
Here's a step by step for turning your lawn into a thriving vegetable garden. This simple write up comes with four methods to getting rid of the grass, a seed starting chart, and low maintenance crops. It even suggests some different techniques for you to implement in your new garden paradise: Check it out: http://urbangardenmagazine.com/2010/02/how-to-turn-your-lawn-into-a-garden/