The Beatles lived in Hamburg for some time. From Wikipedia:
The Beatles' residency in Hamburg, the German city where John Lennon, Paul McCartney, George Harrison, Stuart Sutcliffe and Pete Best regularly performed at a series of four different clubs during the period August 1960 to December 1962, was a chapter in the group's history which honed their performance skills, widened their reputation, and led to their first recording, which brought them to the attention of Brian Epstein.
The Beatles booking agent, Allan Williams, decided to send the group to Hamburg when another group he managed, Derry and The Seniors, proved successful there. Having no permanent drummer at the time, they recruited Best a few days before their departure. They initially lived in squalid conditions, sleeping in an unheated storeroom behind the screen of a cinema, in an area renowned for gangsters and prostitutes. After breaking their contract by playing at another club, Harrison was deported for being under-age, and McCartney and Best were arrested and deported for attempted arson (McCartney and Best had set fire to a condom in the club).
In Hamburg The Beatles first met Astrid Kirchherr, who was instrumental in the adoption of the famous Beatle haircut. During their time in Hamburg bass player Sutcliffe decided to leave the group to continue his studies. In April 1962, less than a year after leaving the group, Sutcliffe died of a brain haemorrhage.