Gay and lesbian couples can legally marry in ten countries on three continents.

But Human Rights Watch said in a report released on Monday that the legalization of gay marriage alone hasn't ended the discrimination gay people face in everyday life.

“The fact that same-sex marriage has been legalized on three continents demonstrates progress in equality,” said Boris O. Dittrich, acting director of the Lesbian, Gay, Bisexual, Transgender (LGBT) Rights Program at Human Rights Watch. “However, while the right to same-sex marriage may be viewed as the last step in ending discrimination on grounds of sexual orientation, legalization does not end discrimination, either by officials or other people.”

Ten counties have legalized gay marriage in the past decade, starting with the Netherlands in 2001. The countries that followed are Belgium, Spain, Canada, South Africa, Norway, Sweden, Portugal, Iceland and Argentina.

Two self-governing cities – the District of Columbia and Mexico City – legalized gay marriage last year. Five states in the U.S. also offer the institution.

Dittrich added: “The trend to legalize same-sex marriage is unstoppable.”