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I wasn't talking about the buildings themselves, but about the atmosphere surrounding them. It just seemed a bit empty to me... no trees, no anything else, just bare ground, but I have no complaints about the buildings themselves.
This depends on the terrain you are playing on, i.e., the ground in the castle (itself) changes depending on the environment (desert, grass, wasteland). Of course, adding a lot of trees won't make a big difference, but for example, a natural castle looks very good on green grass if you use Tigers + Unicorns + Dragons.

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!