I always get a kick out of finding Dianetics groups operating in far-off places (far-off to me, being in the USA). Here's one - Calcutta Dianetics Center and this article on theScientology Mission of Calcutta from Scientology Missions International tells some of the background on how the mission and its Dianetics center was started.

Here is news of another Dianetics center - not anywhere near as exotic (except Silicon Valley can have its moments...)

Dianetics Center Opens in Mountain View and here's a Dianetics group at Dianetics Center at The Better Life Center