It looks to me like Professor G. is scoping out possible locations for a new secret lair from which to plan world domination, and this place could be just the ticket!
1. Heavily fortified and armed, excellent! None can dare approach without feeling the fiery wrath of this mighty artillery!
2. A poisonous herb garden! How convenient! And tasty!
3. Ah yes, how fondly I remember the time I pushed both that meddling snoop Sherlock Holmes and that amateur Moriarty over the cliff at Reichenbach Falls!
4. Perhaps this carding brush would do the trick on my hair!
5. Secret entrances and secret passages everywhere! Most excellent!
6. You know, this bucolic rural life could almost tempt me in to retiring from the world domination biz to become a gentleman farmer.
7. Oh, yes! What a cracking spot to dispose of bodies, straight over the parapet and in to the river!
8. The flow over this cataract will easily power a hydro-electric generator sufficient for my laboratory needs! I imagine the fishing is pretty good, too!
9. This... THIS is what a REAL lair should look like! Bwah hah hah hah hah!
10. Here, Nessie Nessie Nessie!
11. Grate? No, it's the pits! Ha! That's a joke, why aren't you laughing? Wait, who's who, now? Oh, that's my sister, always the photo-bomber. Never mind her. She's always jealous because I got the nicer hair in the family.
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... DAVE