Františka Křížka, the street in front of Bio Oko, will host a pot-luck block party from noon to 8 pm. The program includes workshops on ceramics and papermaking, plus there will be a vintage clothing flea market, yoga for beginners, and live music from Petr Ernyei Trio. The cinema will have films all day, including children's films, in Czech only. The outdoor program is free. Bio Oko, May 1 from 10 am. Read more here.