I am lucky enough to visit The Beatles' historical sites. Of course, I visited Abbey Road in London, in early 2013 or 2014.
And Liverpool Beatles tour are the best. Please click this link, too.
But I also (accidentally) visited Brian Eipstein's office in London, around 2016.
And when I was in Montreal, I also visited John's and Yoko's room at Hilton, in March 2015.