The first legal same-sex weddings will be held in Great Britain on Saturday, which is when a new law allowing gay marriages goes into effect. Find out which countries allow same-sex marriage and where it can get you killed.
Find out where in the world same-sex marriage is legal and where it can get you killed.
Great Britain - Same-sex marriages officially become legal in Great Britain on March 29. Same-sex couples in England and Wales have been able to enter into civil partnerships since 2005.
Netherlands -- This European nation became the first country in the world to legalize gay marriage in 2001, also giving homosexuals the right to adopt children.
Belgium -- Same-sex couples won the right to marry here in 2003. In 2006, lawmakers passed a bill allowing homosexual couples to adopt children.
Spain -- Spain became the third European country to legalize same-sex marriage in 2005. Gay couples can also adopt children there, whether they're married or not.
Canada -- The United States' neighbor to the north adopted a national law allowing gays to marry and adopt children in 2005. However, most provinces had already allowed same-sex unions before that date.
South Africa -- This country became the first African nation to legalize same-sex unions and adoptions by gay couples in 2006.
Norway -- Civil partnerships have existed in this Nordic country for 20 years. In 2009, a law was passed allowing gay couples to marry and adopt children.
Sweden -- Same-sex couples have been allowed to marry and adopt children in Sweden since 2009.
Portugal -- This European country legalized gay marriage in 2010, but excluded the right to adoption.
Iceland -- The country's prime minister married her long-time partner when the nation's gay marriage law took effect in 2010. Same-sex couples who have lived together for at least five years have been able to adopt children since 2006.
Argentina -- This country became the first in South America to legalize gay marriage in 2010.
Denmark -- The first country to allow gay couples to enter into civil unions in 1989, Denmark officially legalized gay marriage in 2012.
Uruguay -- Uruguay voted in early April 2013 to allow same-sex marriage there, making it just the second Latin American nation to do so.
New Zealand -- New Zealand legalized gay marriage nationwide in April 2013 as well.
France was the latest country before Britain to recognize same-sex marriage. Vincent Autin and Bruno Boileau were the first to exchange vows in May 2013 at a ceremony in Montpellier.
Several countries, including the United States, have partial laws related to same-sex marriage:
Brazil -- Several Brazilian states have OK'd gay marriages, but not the entire country. Civil unions have been recognized in Brazil since 2004, and same-sex couples can adopt children there.
Mexico -- Gay marriage is legally recognized in Mexico City, but not the entire country of Mexico.
United States -- It's not legal nationwide, but several U.S. states have passed laws allowing same-sex marriages and civil unions. The U.S. Supreme Court handed two victories to gay rights advocates Wednesday, striking down the federal Defense of Marriage Act and allowing gay marriages to resume in California.
Six countries currently recognize civil unions, giving gay couples more or less the same rights as heterosexuals, but do not recognize gay marriage:
Germany -- Germany has allowed "registered partnerships" or civil unions for same-sex couples since 2001. The partnerships initially provided many but not all the rights of marriage, but currently provide all but joint adoption and full tax benefits.
Finland -- Registered partnerships were created for same-sex couples in Finland in 2002.
Czech Republic -- This country's registered partnership law was passed in March 2006.
Switzerland -- In a nationwide referendum in 2005, 58 percent of the Swiss people approved a registered partnership law for same-sex couples. Gay couples cannot adopt children or undergo fertility treatments there though.
Ireland -- Civil partnerships, which went into effect in 2011, give same-sex couples in Ireland the rights and responsibilities similar -- but not equal to -- those of marriage.
According to a 2011 United Nations report, same-sex conduct of any kind is illegal in 76 countries and punishable by death in at least five countries:
Iran -- Homosexuality is a crime punishable by imprisonment, corporal punishment or even execution in the case of sodomy.
Mauritania -- Under this African country's Shari'a law, "any adult Muslim man who commits an impudent act against nature with an individual of his sex will face the penalty of death by public stoning."
Saudi Arabia -- Homosexuality is a taboo subject in this conservative, religious society and punishable by imprisonment, corporal punishment or even death.
Sudan -- Punishments for anyone engaging in any same-sex sexual activities here include lashing, stoning, imprisonment and, often times, death.
Yemen -- Homosexuality is illegal here in accordance with the country's Shari'a law. Punishments range from flogging to death