Charles Ellicott Commentary Isaiah 15:3

"In their streets they gird themselves with sackcloth; on their housetops, and in their broad places, every one waileth, weeping abundantly." — Isaiah 15:3 (ASV)

In their streets ... —The picture of lamentation is continued. The flat roofs of Eastern houses were a natural resort for such wailings (Isaiah 22:1). The “broad places,” the bazaars or market-places, were also, like the agora of Greek cities, a natural place of concourse. The prophet represents them as filled with the sound of wailing.