For nearly six decades, a redbrick townhouse in central London has been a mecca for Beatles fans. No. 3 Savile Row was the headquarters of the band’s label, Apple Corps , housed the studio where the band recorded Let It Be (1970), and was the stage for what turned out to be the band’s final concert, which the four-piece delivered on the building’s roof in January 1969. Next year, 3 Savile Row will open to the public, with Apple Corps announcing that it is converting the building into a museum dedicated to the Fab Four. Billed as the only Beatles destination licensed by the band (there are two unofficial museums in the band’s hometown of Liverpool), the site will include seven floors of unseen archival material, a recreation of the basement studio, the chance to wander around the roof, and, of course, a gift shop. “Every single day fans are taking pictures of the outside of 3 Savile Row,” Apple Corp’s CEO Tom Greene said in a statement . “We’re thrilled to give the Beatles fans something truly special.…