More than two thousand years ago, Romans used tightly fitted cut stone set on a compacted aggregate base to create superior roads. Today, tourists walk those same roads over the original paving stones. Simple, economical, durable, and virtually maintenance-free, the Roman system became the concept for a most versatile paving solution. The modern version uses precision manufactured concrete interlocking paving stones. Developed in the Netherlands shortly after World War II as a replacement for clay brick streets, concrete pavers became the norm in Europe. With billions of square feet installed annually on a multi-continental scale, the ingenious pavement of the ancient world has been translated into the ultimate paving solution for the present.