There's a reason American Horror Story has the following it does. Not only is the cinematography on par with theatrical films but the storylines and cliffhangers consistently have viewers screaming at the TV in tense anticipation. The uber-talented actors often play multiple characters through the seven seasons and the overarching themes and easter eggs make for intriguing television.
For so serious and gruesome a show, the behind the scenes pictures from American Horror Story are incredibly fun. It makes sense that a cast that has worked together for so long - and witnessed each other's demises so many times - would be quite tight knit when the cameras stop rolling. These behind the scenes photos of AHS also provide insight into how the magic happens. Clearly much make-up (and fake blood) is a must.