No, Clive, it's not just you. I've not even lasted 10 minutes with Dimblebore's borathon. What a total waste of time and money. I've tried two and lost the will to live very early on, for exactly the reasons you mention.
Contrast it with a programme I happened to catch the other day - Gavin Stamp's Orient Express on Channel Five. I saw only the last one in the series, on Istanbul, but thought it superb - intelligent, enlightening, witty and plain entertaining. An object lesson in architectural programme making.
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