This is a beautiful thick tile from the Moravian Tile Works in Bucks County, PA. It is of the castle built by the founder, Henry Chapman Mercer who was a major proponent of the Arts and Crafts movement. All the tiles are handmade. These are particularly interesting due to their three dimensional quality. This one measures 4.5" x 3.375" x roughly 1" at the widest point. Good collector's item.
Thank you for looking.