The walls mark its perimeters that separate the park from the memorial site.

IN modern times walls mark borders, show limits, or divide one landowner's property from another's.

In Berlin, the walls would be of concrete, carefully smoothed and marked to suggest stone blocks, but that's the only real difference.

The inner wall has the same albedo as the surrounding terrain, and marks the perimeter of the flooded floor.

This wall marks the place where the republic of the long-legged insects begins.

A wall covered with crystals of ice marked the termination of the corridor.

Saybrook realized that the wall might mark the presence of another chamber beyond.

Winding walls of steam marked the paths they had formerly taken.

Twenty years later, the theater has no roof and its walls mark the Northern Alliance's forward position here.

Smashed buildings and bullet-pocked walls still mark the old front line.