England–Wales border point. In 926, Edward's successor Athelstan, "King of the English", summoned the Welsh kings including Hywel Dda of Deheubarth to a meeting at Hereford, and according to William of Malmesbury laid down the boundary between England and Wales, particularly the disputed southern stretch where he specified that the eastern bank of the Wye should form the boundary. By the mid-eleventh century, most of Wales had become united under the king of Gwynedd, Gruffudd ap Llywelyn. In 1055, he marched on Hereford and sacked the city. He also seized Morgannwg and the Kingdom of Gwent, together with substantial territories east of
Wales 1536 formed a linear border stretching from the mouth of the Dee to the mouth of the Wye. Even after the Act of Union, many of the borders remained vague and moveable until the Welsh Sunday Closing act of 1881, which forced local businesses to decide which country they fell within to accept either the Welsh or English law. The "Seven Wonders of Wales" is a list in doggerel verse of seven geographic and cultural landmarks in Wales probably composed in the late 18th century under the influence of tourism from England. All the "wonders" are in north Wales: Snowdon