Snapshot 16w39a for Minecraft 1.11 update just added new randomly generated structures to Minecraft, Woodland Mansions! With this seed you will spawn right next to one Woodland Mansion, just watch the video above for directions.
This is what the Woodlands Mansion looks like. It's huge! Now let's go inside it!
With this seed the doorway is little bit blocked by trees and terrain, but it's still easy to find. Now I will just show what's inside it.