Eurocon is a annual convention for the classic game enthusiasts who gather together for playing, selling, trading, chatting, socializing, laughing and drinking beer (or wine or...)
The conventions are small in size (about 20-30 people attend the full weekend) so you can really get to know each other.

A typical Eurocon weekend will usually include some if not all of the following activities: gaming contests, a sale and trade session (also open to the public) an auction, a quiz, a "show and tell" session (where a collector talks about a centerpiece of their collection), and sometimes a night out on the town. More infos can be found at: Eurocon