Boilin' Lake O' Lava

I'm just a little uncomfortable about being on a rickety bridge over a boiling lake of lava!

Yep, It's That Time Of Year Again. The lava's looking extra murderous this year, the bubbles are popping 150% more violently, and the lava itself is about 200 degrees hotter. How fun! But one question: Why would anyone want to build a castle surrounded by a moat of sudden death? It might be that Villain wants their castle to look a lot cooler than they actually is, or maybe to add a sense of danger to their otherwise harmless-looking home.