Gay marriage around the world. Despite Proposition 8, many regions around the globe are allowing same sex marriage. This is a list of those legalized gay marriage states and countries. Where are the countries that legalized gay marriage? They're mostly in Europe, where progressive societies have warmed to same-sex marriage. In the past decade, this has become more normalized in many civilized nations. Though the majority of countries haven't warmed to gay marriage, these have. If you want to get hitched, these are your marriage-friendly gay destinations. Take a look at this list and you'll what countries have legalized gay marriage.