San Francisco – from www.nbcbayarea.com – Ever wondered what happens on a porn set? Okay not what happens really but how all the magic comes together?

If so, Friday is your lucky day. The lovely folks behind Kink.com are offering a free tour of the old San Francisco Armory in the Mission where they film their educational documentaries, according to our friends at Mission Mission.

Kink.com occasionally hosts the behind the scenes look into the adult entertainment industry but tickets get gobbled up fast.

The armory of course is the fort like building that greets people into the Mission. It once housed the weapons of the National Guard and it played a pivotal role in the 1934 San Francisco General Strike.

But nowadays it has a much less serious role. The one-hour tour starts at 4:30 p.m. and who knows, you might get lucky and land a new job.