Öreskoga is a fictional town in Sweden, where most of the Bert-diaries take place. Bert Ljung lives in Öreskoga, at Klosterstigen 18. In the books, he lives in a three floors high house with six flats, while he in the TV series live in a high-rise apartment building, similar to those in Hagalund. The name Öreskoga is a portmanteau of the hometowns of the authors of the Bert-diaries - Sören Olsson's hometown, Örebro, and Anders Jacobsson's hometown, Karlskoga. Öreskoga is located somewhere between Karlskoga-Örebro.