Sedum-top dry stone entrance-gate wall.. 

Below is another shot of some curved entrance walls Stephen Nevin built recently. He is going to go back to take some better shots later when the gates and fence are up. They stand at 5' and use stone from the property. This is just around the corner from walls he built near Mohawk Raceway in Ontario, several years ago. Stephen was the winner of the 2009 DSWAC dry stone fireplace award.