I'm planing on backpacking across Europe next year and I hate being the dipshit who only speaks one langue. I already have a small amount of german and spanish so those are the only two I'm interested in. I get the impression that outside of Spain spanish isn't spoken much but I do plan on traveling south america at some point too so spanish is going to be needed eventually.
Spanish is totally irrelevant outside spain, russian, german and french are the biggest three langauges understood by most europeans. Of course english by younger people.