Level 11 is similar to Level 9 in size and structure; however, rather than consisting of middle-class suburban houses, it is populated with office buildings, apartments, and various other buildings commonly found in large cities in the Frontrooms. Level 11 is also cluttered with parks, plazas, and metro stations; however, very few stores have been discovered. Some explorers have founded their own establishments, selling items found during their journey through the Backrooms.
There are multiple nuclear power plants (Note: power plants have signs of "Perbonusium" in the reactor shafts.) throughout Level 11 and are usually present 40,000 kilometers apart, these plants do not appear to be operational; theories affirm that they were abandoned a long time ago. Although Level 11 seems stationary, movement, while the buildings are out of sight, is quite common. The structure of Level 11 seems to be constantly shifting, and explorers have reported buildings moving hundreds of feet while out of sight, sharing similarities with Level 0, this only happens in the city-area of Level 11. The time of Level 11 is always noon, which can make it hard to sleep.
Entities
Facelings are extremely common, and can be found throughout all areas of the metro. Level 11 seems to affect both adult/child Facelings and even Hounds making them neutral towards travelers, additionally this “passive effect” makes Facelings act like ordinary human beings. Pigeons can also be seen in this level, and this is the level you will see them the most.
Its a safe place to stay or even trade unless you have committed a sin.
Entrances
Level 11 can be accessed through Level 9 by wandering 100 to 200 miles (ca. 322 km) or traveling in The Metro. When entering Level 11 through Level 9, it is noticeable that the surroundings seem to slowly change.