inexpensive but really effective- sleeper construction raised garden beds. They could look like a spilling garden retaining wall.
garden design raised bed sleepers - like the dark colour
Furniture, Outdoor Screen Panels For Exterior Landscape Design Ideas: Tips for Decorative Screen Panels with Latest Design Ideas
A Multilevel Garden: Answers to an Awkward Yard - Multi Levels Provides Variety of Linked Spaces
Love this tiered stone retainingwall - multi-level landscaping!