Every year one weekend at the end of June in Chitré, where I currently live, the city explodes into a huge festival celebrating San Juan Bautista (one of the Catholic saints). Friday is a drunken sort of horse parade, Saturday hosts nightime activities and fireworks, and Sunday combines the two into a drunken cultural parade with traditional dress and beer.
And I got to experience it all this year (minus the drinking, of course, since I was working)...
It was pretty entertaining.