Source: Public Broadcasting Service (PBS).
Summary: Throughout recorded history and since time immemorial, thriving cultures have recognized, revered, and integrated more than two genders. Terms such as transgender, gay, or bisexual are Western constructs that often assume three things: that there are only two sexes (male/female), as many as three sexualities (gay/straight/bisexual), and only two genders (man/woman). Take a tour with this world map, and learn how many cultures see gender diversity.
You can access the map here