Scandinavia and the World

Comments #9800735:

Die Deutschen Geschwister 27 11, 10:47pm

As Skyacya said, Oktoberfest originated in Southern Germany, more specifically Bavaria, where the world's biggest one is still held in Munich every late September and early October.

However, this tradition actually has become widespread and popular in Denmark as well, so you'll find many smaller Oktoberfests, some private and some public, around the same time of the year in Denmark too.