All castles in Heroes 3.

No... I actually like their appearance – they look cool, like chess pawns, and it's also cool how they're depicted when they're defeated...

No, they're not pawns.
If we're talking about what they resemble, I'd say the Conflux is a real, bona fide brothel. Level 1 is for prostitutes, and level 6 features strippers whose looks and assets are so captivating that people literally drop dead from the sight.