Calstone 129000068 18" x 12" x 4" Allan Block Europa Barcelona Brown Beige Charcoal - Allan Block Europa captures the hand-laid stone effect that brings distinction to any project. The antiqued finish creates a stunning look and gives the old-world charm to any landscape. When using the Allan Block Europa Collection, you can claim more space by turning sloping yards into beautiful gardens and planted terraces. Upgrade your backyard space and extend your home outdoors adding beauty and functionality.