Plants and timbers. What a great look! I don't have a spot like this, but why not just do this somewhere in your yard against a fence even with a garden area. Nice to have your herbs separated from other plants anyway.
DYI Pallet Vertical Herb Garden: Most of us live in narrow and really limited living space and cannot afford a garden place. To feel the greenery and pure nature so close even you are living in a comp(Diy Pallet Garden)