The second port of call was the landmark near Wrexham I had wimped out of pursuing on Friday. As it turned out, it was trivially easy to spot ('trivially' there being a hilarious Latin pun, since the landmark was situated at a crossroads)
Next we went tantalisingly close to the Horseshoe Pass, but with too many miles to cover to enjoy its delights. As I stopped to consult a tourist information board, a helpful hiker asked what I was looking for and pointed out my landmark, sticking up most obviously in the middle of a nearby field.
Having mopped up three landmarks in a couple of hours, we stopped for a service station cheese sandwich in high spirits.
Things went slightly off-track in the afternoon. Our landmark was near the town of Clun, reached by unclassifieds and B-roads, but I wasn't sure exactly where. Plus it was raining. I asked a friendly local and was directed down a very lovely B-road back into Wales. The car park was exactly where he had described, but it was the wrong car park for my landmark. We backtracked to a different parking spot, negotiated some horrific potholey gravel which nearly had me off, then gamely walked half a mile uphill. After all this fuss, we were jolly well going to find what we had come for.
It looked for a while as if we were going to return empty-handed, as the trail we were following seemed bereft of landmarks. Then Howard detoured into a muddy field full of sheep, and there it was, hidden away behind the trees!
Returning to the car park, I made sure to take a photo of my bike next to a signpost, proving as per the rules that I had actually ridden to the spot. Then we headed for Severn services by the sat-nav's alleged most direct route.
All this left me the wrong side of the Severn Bridge at 7PM, which made for a later arrival home than I'd envisaged. But at least I wrung the very last drops out of my Bank Holiday weekend.