Lord Ganesh idol & worship existed throughout the world and not just India since Ancient times. There are interesting local flavors to the forms of Ganpati idols worshiped across globe.
It existed in South America, Europe, Middle east, and almost all of Asia.
German scholar Philipp Franz von Siebold has written that in the year 1832, there were around 100 shrines of Lord Ganesh in Tokyo itself.
A 12th-century temple of Ganesh in Asakusa suburb of Tokyo has been declared a national treasure of Japan.