How do same-sex people get married abroad?

In foreign countries, homosexuals can get married. Same-sex marriage is legal in the United States and Canada. But in Britain, same-sex marriage is illegal. In France and the Netherlands, same-sex marriage is legal. In Germany, same-sex marriage is also legal. In Australia and New Zealand, same-sex marriage is illegal, but it can be registered as long as both parties agree. Gay marriage is legal in Japan. However, homosexuals must obtain the permission of the Japanese Minister of Justice before marrying heterosexuals. In South Korea, same-sex marriage is legal, but gay men must obtain the permission of the National Assembly before marrying heterosexual women. In Sweden.