Tests show that females use visual landmarks to return to their nests.

"They continued to be sensitive to the shape of the environment but were no longer using visual landmarks to reorient themselves."

This will serve as a visual landmark for the robot.

A visual landmark of the moshav is a high wind turbine.

Captains often rely on visual landmarks to judge when to begin slowing down.

Never before did I realize how lost we are without visual landmarks.

It also serves as a visual landmark for ships entering the Port.

It measures only 150 by 300m but is the main visual landmark in the area.

Its impressive height helped make it a visual landmark for drivers and pedestrians.

High altitudes make it difficult to calculate a plane's position using visual landmarks on the ground.