Pyrkon!

Pyrkon 2015 convention in Poznań.

It happened over three days, 31 000 geeks attended the panels and workshops, there were LARPs, rpg games, card games, board games, computer games, meetings with book authors, an art exhibition, a dragon exhibition, a fire show, a trade hall with absolutely everything you can think of fantasy and sf related to buy - all happening in 10 expo halls.

Magic!

(Anybody cares to identify this pair?)