Either organizing and running four regional historic blackpowder arms shoots (1399 - 1894; we had one whole organized platoon of Civil War reenactors at one) or one of two special museums...
The Armouries in Leeds, UK, where I've been a few times (already mentioned by someone) and where I took a hands-on class with the armorers on Napoleanic weaponry, or,
The Frasier Museum (formerly the International Museum of Military History or something) which is now the US branch of the UK Armouries! This is a truly special place in Louisville and you need to be there for a minimum of two days to see as many of the living history vignettes as possible.
The Armouries in Leeds, UK, where I've been a few times (already mentioned by someone) and where I took a hands-on class with the armorers on Napoleanic weaponry, or,
The Frasier Museum (formerly the International Museum of Military History or something) which is now the US branch of the UK Armouries! This is a truly special place in Louisville and you need to be there for a minimum of two days to see as many of the living history vignettes as possible.