buttressed retaining wall in a sentence

1. On the right a long gallery enclosing the parterre separated it from the patterned beds of vegetables and fruit-trees on a lower level, beneath a massively buttressed retaining wall.
2. Directly to the east is Claremont Avenue, which is dramatically lower in elevation, and resulted in a buttressed retaining wall being built during the period that extends the length of the park.
3. It's difficult to find buttressed retaining wall in a sentence.