An alley is a road lined with trees on both sides. Alleys can be straight or winding, long or short. The trees in the alley can be of the same type or different types. Alleys decorate our cities and villages. They: Create shade and coolness on a hot day. Cleans the air from harmful impurities. Reduce noise levels. They are a place for relaxation and walking. Promote environmental education of the population. Alleys are green arches that connect the past, present and future. Interesting facts ...