ZCerberus' Dragon Keep is an impressive LEGO castle by anyone's standards.
Not only does it have a quite unique aesthetic, there's also a lot of lovely smaller touches. Notice for example that it seems to be fall and all the trees are shades of orange and red. Or that a small portion of the castle appears to be constructed of wood rather than stone.
You can see lots more detail shots at the Eurobricks forum along with the story behind this castle.
Source: Eurobricks - Dragon Keep