Daily ruins (at least it is planned to be daily in the German version).
Day 23: Blue Planet.
Fungal Palace
The outlines of this abandoned research stations can only be vaguely made out under the massive growths of fast-fungus covering and penetrating the buildings of the complex.
The ultra-aggressive fast-fungus strains have their threat levels increased by one and can easily spread from the isolated site if proper quarantine and decontamination procedures are not observed.