Help please. Can't fine the entrance to siege tower. I killed Grosuk. Still can't find the entrance, I fell stupid. Any help is appreciated.

It's on a wooden platform just above where Grosuk was standing. Have you been told how to get in?

You've already found the entrance, you need to find the way in... ;)

Have a chat with Laslo inside the marketplace.

No i don't know how to get in. Thank you for helping me. Alavin will you tell me how?

RQ said it. Go into the main marketplace building and talk to Lazlo until he tells you how. Then go back, and the portal will open.

Thanks guys i'm doing now.