This one time, at band camp, Kake L Pugh wrote:
One thing I've never been really sure about is what comes under the remit of the guide - I'm not an engineer, though I do like looking at bridges and things. It'd be useful to have some kind of guidelines as to what belongs on the guide - as a possibly extreme example, is interesting brickwork enough to merit inclusion?
I chose "engineer" because a mate of mine who is one said he wouldn't look at a "geek tourist" site.
If you're a geek and you think it's interesting, I suspect it qualifies. Go for it!
Most of what's in there is big stuff or historical, but that's in no way what it's restricted to. Hell, I've even put in the Brogo Rotolactor, a device from my childhood for efficiently milking cows, which I thought was cool. http://engineer.openguides.org/?Brogo_Rotolactor