What city hosted the biggest gay pride celebration in the world in 2006?

In 2006, the São Paulo Gay Pride Parade, was considered the biggest pride parade in the world by Guinness World Records with an estimated 2.5 million participants, In 2009, 3.2 million people attended this celebration.

Pride parades (also known as pride marches, pride events, and pride festivals) for the LGBT community are events celebrating lesbian, gay, bisexual, and transgender (LGBT) culture and pride. The events also at times serve as demonstrations for legal rights such as same sex marriage. Most pride events occur annually, and many take place around June to commemorate the Stonewall riots, a pivotal moment in modern LGBT social movements which occurred in June 1969 in New York, New York.