[2][3] Formerly in widespread use, particularly on steeper streets because setts provided horses' hooves with better grip than a smooth surface, they are now encountered more usually as decorative stone paving in landscape architecture.Silloth on Solway, a seaside town in Cumbria, still has setts (originally laid in the 19th century) on Eden St and the seafront Criffel Street.To make it easier to bike on, the part of the road meant for bicycles are paved with special stones that are saw-cut on top for smoothness and jet-burned for friction.Portland, Oregon, used Belgian block paving extensively in the 19th century, starting near the Willamette River, to stop the streets from washing away in floods.The romantic claim that old Portland "cobbles" were imported as ship's ballast is incorrect; they are local basalt, quarried near St. Helens in Oregon.