Explore details about location Glyn Rhosyn. Glyn Rhosyn is a location situated within the Llwchwr alongside other areas such as Cae Castell (#14 - #28), Penlan Road, Cae Castell (#32 - #43). Additionally, some smaller parts of Glyn Rhosyn include specific areas like Tredegar Road, Gorseinon Business Park adding to the diversity of its landscape.