I like these, they would look good just about anywhere in your yard. Click on the link below for a lot more pictures.
These days, I saw that many people who seemed to be interested in herb spirals, so, if done properly, they need little maintenance and can keep the herbs all around the year. Basically, the idea behind them is to get in a confined area as many different herbs as possible. The spiral and the subsequent height differences mean that you create a number of different environmental conditions which wouldn’t normally be possible in a small space. The small area also means that they are ideal for a little garden, therefore harvesting and watering is easy. How it works? Start from a spiral bed in which to plant, this is held together with a structure made of rock, brick or anything that can really absorb the heat of the sun during the day which in turn heats the soil. I searched some tutorials of “how to build”, and I selected more detailed one to show you. See below a video about “how to build” a herb spiral with rocks, straw, soil, herbs, and water.