A retaining wall is a structure, not a landscape feature. Walls here fail for three reasons: no drainage behind them, an inadequate base beneath them, or a loading condition that required engineering it never received.
Paver Patios vs Stamped Concrete: What Actually Determines Cost
The surface is a small fraction of the outcome. Excavation, base, compaction, separation over clay, and slope decide whether a Central Ohio patio survives, and none of it appears in a photograph.