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  • Free entry · Sundays in July and August

#Grohmania. Family picnics in the park by Fabryka Grohmana

Looking for something to do on a summer Sunday with the family? In summer the park by our head office on Księży Młyn turns into the place of the #Grohmania picnics: bouncy castles, workshops, live music and a guided walk through the old factory. Free entry, no sign-up — bring a blanket.

See the photos
An outdoor family picnic, children receiving candy floss from an organiser

About the initiative

Our head office stands in the old Grohman factory on Księży Młyn, among brick halls and a park with a pond. Spinning mills and weaving sheds worked here once. For most of the year it is offices and conference halls now, but in summer we open the gate and the park goes back to the neighbours. We have run picnics at the Grohman factory since 2013: by 2019 it was already the seventh edition, and today the series is called #Grohmania.

Every picnic has its own theme. In 2025 we partied in 1920s style and at a “picnic of the future”, among others; in 2026 there were fairy-tale, sporting and historical picnics, and more than 300 people came to the last of them. What stays the same is the time (Sunday afternoon), the place (the park at ul. Tymienieckiego 22) and the rule: entry is free and needs no sign-up. You can come by tram, by bus or by bike, and from the city centre you can walk.

A crowd of people walking along a path in the park by Fabryka Grohmana, families sitting on the grass

Who the picnics are for

The picnics are open to everyone. We build the programme around three groups of guests.

  • Families with children: a bouncy-castle zone, entertainers, prize competitions and a foam party to finish.

  • People from Łódź and neighbours from Księży Młyn: concerts, deckchairs under the trees and a guided walk through the history of the factory.

  • Companies and the Zone’s own staff: a chance to see the Zone from another side and meet outside a conference hall.

Entry is free and needs no sign-up. You come when you like and stay as long as you like.

What is waiting on site

The programme changes with the theme, but a few zones stand at every picnic.

A crowd of guests on blankets and deckchairs on the park lawn, colourful bunting above them

3

themed picnics in the 2026 season: fairy-tale, sporting and historical.

  • A zone for children: bouncy castles, creative workshops and prize competitions.

  • A quiet zone: deckchairs under the trees and a food stand with ice cream, candy floss and drinks.

  • Live music, shows and a guided walk through Fabryka Grohmana and Księży Młyn.

The 2026 season

Three Sundays, three themes. This is how the programme looked this summer. The 2027 season returns on summer Sundays; we will publish the dates on this page.

  1. Fairy-tale picnic, 12 July

    Fairy-tale entertainers, a stage show for children, prize competitions and a foam party to finish. Costumes welcome.

  2. Sporting picnic, 26 July

    An obstacle course, a water course, a volleyball court and family contests. An open training session with instructors, a skateboard workshop with Łódź Skate Club and a bike service point.

  3. Historical picnic, 9 August

    Re-enactments, displays by the Knights’ Brotherhood, archery, traditional printing and herbalism, a field game and a guided walk around Księży Młyn. Plus live fiddle music and old tunes.

#Grohmania in numbers

  • Children by a colourful bouncy castle with a slide, the brick factory behind

    3

    picnics in the 2026 season

  • The Tripper Stompers brass band playing on the stage in the park: trumpet, saxophone and trombone

    4

    picnics in the 2025 season

  • A craft workshop at a long table, children and adults sewing decorated bags

    PLN 0

    entry to every picnic, no sign-up

See how the 2025 season looked

A minute from the #Grohmania picnics: the park, the stage, the bouncy castles and the crowd on blankets.

Families resting on blankets and deckchairs on a lawn under the trees, a marquee behind them

Gallery

Bubbles, bouncy castles, a barber under a marquee and a brass band on stage. That is how the 2025 picnics looked.

  • A path in the park by Fabryka Grohmana with deckchairs on the grass, a woman in a long skirt walking past the stage
  • A woman blowing giant soap bubbles on the lawn, a child watching beside her
  • A child in a green hoodie running after giant soap bubbles in the park at sunset
  • Children playing in foam in front of the brick Fabryka Grohmana with its tower
  • Families on blankets and deckchairs under the trees, an entertainer in a period uniform among them

Have a question about the picnics?

Would you like to suggest an attraction or ask about the next season? Write to us.

The initiative’s account manager

Have a question right now?

+48 42 208 06 00

The Zone’s helpline

See what else we do for the community

#Grohmania is one of the Zone’s social initiatives. See the others:

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