Depending on whom you ask, Hungarian probably qualifies as not so famous -- although among linguists it's pretty famous, as unlike all its neighbor languages it

Depending on whom you ask, Hungarian probably qualifies as not so famous -- although among linguists it's pretty famous, as unlike all its neighbor languages it's not Indo-European. Learning it has indeed brought me amazing benefits, chief among them a Hungarian wife. :-) Seriously though, all human languages have qualities unique to them, and once you speak a second language fluently you realize that there are entire ways of seeing the world that are only possible to describe in that language -- indeed, I believe that for every single natural language there are things it's only possible to think or conceive in that language. This is probably less significant if the language is closely related to your own, but one of the thrills of learning a very very different language is that it opens your mind to concepts you realize you'd never have remotely understood beforehand. As an added bonus, Hungarian is quite beautiful, and the Hungarian capital city of Budapest is a fantastic town. So, if you're asking because you are thinking of learning a not-so-famous language then I encourage you to go for it. But understand that without immersion you'll never get far, so make a plan to go live in a place where they speak that language, at least for a year. And once you get there, don't slack off: some great places with unusual languages can easily accommodate you in some more common idiom.