This Old House landscaping contractor Roger Cook shows how to construct a wood-timber retaining wall to create a play area.
The simplest,cheapest,back-friendliestretaining wallin history
How beautiful these boulders and pebbles retaining walls look! The most amazing design is that plants can be mixed into the wall area.
Top 10 Ideas For DIY Retaining Wall Construction - pots around the wall, fire pit in the middle
Interesting Affordable Great Retaining Wall Ideas -- too industrial for the amount of walls we have?