The destination of my hike this day was Trosky- that's the ruined fortress on the hilltop, not the farmhouse. The distance from Turnov was I think 12 km- maybe a couple more from the Karel IV, plus a few more spent exploring. And when I got to the top- it was closed. When I was in Prague, everything was still on an in-season schedule, but out of the city, everything seems to go off-season at the beginning of October. In this case, Trosky turned out to be only open on weekends. I wasn't too surprised, since Valdstejn had been closed as well. But the hike up to trosky was more important than getting inside Trosky, so it wasn't too much of a disappointment.
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Fortunately the little restaurant at the fortress was open. The place was run by a big bear-like guy with a bushy beard, who seemed like he might be -very- disappointed if you left without a snack. So I had him boil up a sausage and some coffee (don't worry, separate water for each), and sat down inside the restaurant, warmed by a wood stove (my host told me it was too cold to eat outside). Pictures on the wall showed the building of the restauarant, back in the 20s. Afterwards, I headed down through the fields again.