We just posted a new article all about marrying in a foreign city.
Contrary to what you might have heard, getting married at a U.S. Embassy does not make your foreign marriage legal. You need to be married by the laws of the country in which you wed, which generally means marriage by a religious or civil official. Your foreign marriage will, most likely, be valid in the United States; direct queries to your state’s District Attorney’s Office.
The first step is to contact the local embassy or tourist office for the country you’re headed to; luckily, you can find most of this information online. Do not put this step off. As soon as you decide on a foreign affair, find out what the requirements are. General rules require birth certificates, death certificates, and divorce decrees and parental consent, if applicable. Some countries require blood tests... Check out the full article here.