Landranger map number 175 shows Windsor, which offers you the chance to visit the Queen's favourite weekend home. It's almost 1000 years old, making it the oldest & largest occupied castle in the world. Alternatively, cruise down the Thames at Maidenhead for an unwinding experience or explore the bustling town of Reading by visiting the museums & the Abbey Ruins. 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 Reading & Windsor is available in both the standard paper version & weatherproof " Active" version.