I'm considering doing another bike ride to Wales and back soon, and looking for an alternative route to the one I did the last two times. This photo, taken from Street View, contains both England and Wales. The camera is in England and everything behind the telegraph pole is Wales.
(https://i.ibb.co/Tm0qwhM/wales-england.jpg)
I did do Wales and back on Sunday, but took a less obscure route across the border.