Calstone 129000055 8" x 9" x 9-1/2" Allan Block Europa Palermo Gray Charcoal Tan - 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.