How to get up to the bird's eye view point of the arsenal in Assassin's Creed Revelations

Figure 1. you can see the route.

(Start with the crates, then there is a row of sticks that line up under the bird's eye view point. This piece is all easy, just follow it through.)

Go to Figure 2.

(Just lean slightly to the left, where I'm standing. Right mouse button + direction and you can go right up.

Then go all the way forward to the platform in Figure 3.)

Figure 3.

(Not much to say, against the wall directly plus space to hook up on. Go to 4 on the dais.)

Figure 4.

(This is just a matter of jumping straight to that platform below the bird's-eye view point)

Figure 5.

(Come to the end of this. Aim at the wall and run up it. He then goes up.)