What's so interesting in a bunch of drunks together celebrating their love for beer? Well, it was fun! Probably being as massive as it is makes part of the attractive. Like in the tent (that's how they call it although is not a real tent) I stayed there were probably around 5,000 people, and there's close to 20 of these I think. I also liked the traditional part of it, clothing and the enthusiastic chanting accompanied by cheers following the band. There is a little glimpse of time traveling when you celebrate traditions like this.
The Bavaria monument is pretty impressive when seen from below, apparently it was possible to see the inside at some point, but it doesn't seem to be open anymore.
It made me think for some reason of Rio de Janeiro (Brazil) in Carnaval, as far as a social massive drinking craziness goes, although I haven't been there but I would expect the later to exceed this.
Here are couple photos: