At the end of August 1966 the Beatles finished their final world tour, and then went off in four different directions. From September 14th to October 22nd George Harrison and Pattie Boyd vacationed in India, visiting Mumbai, Kashmir and witnessed the Ramlila Festival in Benares. George studied sitar under Ravi Shankar. He would return to India the next year, but in a sense, he never left. Source.