The Kingdom of the Outlands is a regional branch of the Society for Creative Anachronism (SCA), a world-wide non-profit historical preservation society dedicated to recreating the arts and sciences of pre-17th century Europe.
The territory covered by the Kingdom of the Outlands includes all of New Mexico and Colorado, as well as parts of Wyoming, Nebraska, and a tiny part of west Texas.
There are 28 local groups scattered about the Kingdom. It is likely there is a local group near you.