Recreational Medievalism covers a range of hobbies and groups including the Society for Creative Anachronism, Renaissance Faires, and other such things. The SCA is the largest and most common medieval activity group and has a strong geekish culture which crosses over with Science Fiction Fandom, technology, etc. The SCA has roughly 50/50 participation with regards to women, and women hold many leadership positions in the organisation; sometimes it is refered to as a matriarchy. However, there are still issues of sexism to be addressed.