Taverns

Taverns serve three important functions on all planes. First they serve beer and other forms of alcohol and provide lodging. Second, they are often the best place to go to get into a quick bar fight if you’re into that sort of thing. Third, and most importantly, taverns have the innate ability to spawn adventuring parties. Sages speculate as to why this is, but it seems to be one of the fundamental laws of the multiverse originating with a troublesome human ranger named Aragorn.