Map number 117 in the OS Landranger map series covers an area from Llangollen in the south to Ellesmere Port in the north with Chester lying on the River Dee. The main attractions of the city include Chester Zoo & the racecourse. A short journey north will take you to the large industrial town of Ellesmere Port & just across the Welsh border to the south west is Wrexham, the largest town in North Wales. With this map you will receive a code for use on your i OS or Android smartphone or tablet. Find our more at Mobile Download FAQ. The OS Landranger map for Chester & Wrexham is available in both the standard paper version & weatherproof " Active" version.