"The Towered Monstrosity?" said the old man, "Aye, heard of it I have, twas said to be a castle that could not be sieged!" "All things must come to an end however, you see young master, there was a crafty general who wanted the castle for himself. For it sat on a plain near the ocean, and from there he could build himself a port, and become wealthy." "He raised an army, and marched on the castle, and then..."
Basically this castle consists of a large number of towers connected by bits of wall. Normally a Siege That map is quite easy, but the castle sits in a position that most will find quite annoying at the beginning. Don't worry it's not impossible; just like with every castle there's a trick to breaking it!