However the Berlin is a few metres below ground level (you have to walk down steps at the Berlin entrance) therefore under the level of those facades.^ Sounds great
But what about the iron wall construction (for the facades of the steampunk houses) of which is being built against the back of the Berlin buildings (so also the back of this bakery)... It is blocking the possible walkway through the bakery building?
If I see it well on all the pictures of the construction site, the access road which goes from the Berggeiststraße underneath the office building to the Kaizerplatz will still be there...as a emergency exit? Which brings me to the question how they're going to connect the pathway through the bakery building to the Rookburgh area when this access way/emergency exit needs to stay open? It could be done with just a wooden movable fence at both sides of the walkway but I can't imagine this bc Phantasialand would put immersive theming everywhere, even on pathway.
Looking at the aerial photos from November you can see these openings (circled in red) in the concrete under the facades and the emergency roadway
And directly behind those openings is the blue bakery building (circled in blue) that has just been demolished.
So you'll walk through these large tunnels it seems and then come out into Rookburgh (and going by the aerial image the coaster will pass straight overhead at that spot).
Actually this old graphic of the site back in August from PhantaFriends shows it better.