Summer opening hours 23.6.–10.8.2025
If you're looking for a quieter time for your summer visit, it's a good idea to arrive first thing in the morning or alternatively in the afternoon. However, please remember that ticket sales end one hour before closing time on the day.
Opening hours during the summer season 23.6.–10.8.
Mon–Fri 9 am–6 pm and Sat–Sun 10 am–6 pm.
Tips for your summer 2025 Heureka visit:
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Science outdoors
Heureka's exhibitions continue outdoors during the summer! Galilei Science Park is only open during the summer, and is included in the price of the day's Heureka ticket. The outdoor exhibition area includes, among other things, the popular human yo-yo and various water attractions.
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Heureka's beloved pet rats
In the rat feeding show, an inspirer tells about the rats' behaviour, feeding and everyday life at Heureka Rottala.
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When hunger strikes
The Science Restaurant's delicious lunch and small sweet and savory snacks will ensure that you have enough energy throughout the entire Heureka day! An ice cream kiosk is also open outside Heureka throughout the summer.
Everything with one ticket
You should reserve 2-4 hours for a visit to Heureka, as we have plenty to do! Check out all our exhibitions below.
Exhibitions
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Giants of the Ice Age
8.2.2025–6.9.2026
Nearly twenty life-size animal robots await visitors at the Giants of the Ice Age exhibition - including a mammoth and a saber-toothed cat!
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Our Journey in Space
10.2.2024-6.1.2027
Our Journey in Space is an interactive science center exhibition for the whole family
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Water – The stream of Life
Exhibition is on display for the time being
Water – The Stream of Life. The exhibition is suitable for people of all ages and backgrounds, to children and to adults, as well as the curious and those who like to delve deeper.
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Play and Explore
Opens 20.12.2025
A new exhibition dedicated to play will open on Saturday 20.12.2025. The exhibition consists of sites from the Power of Play exhibition and the Idea Workshop.
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Different Eyes
May 15, 2025–January 6, 2026
Two Centuries of Braille anniversary exhibition. We live in a world that emphasises visual information – but what if our eyes cannot see? The exhibition was curated in collaboration with the Finnish Federation of the Visually Impaired.
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Fibrations
10.6.2025–6.1.2026
The exhibition showcases student works of the Aalto University interdisciplinary course Crystal Flowers in Halls of Mirrors: Mathematics Meets Art and Architecture.
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Exhibitions Outdoors
Opens again summer 2026.
At Science Park Galilei you can try out large-scale objects based on music, mathematics and physics phenomena. Opens again 2026.
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Artificial Intelligence – Me, Myself & AI
Welcome to the village of the Scientist's home full of artificial intelligence! Can you beat the robot in rock-paper-scissors?
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Heureka Classics
Opens in Spring 2026
Heureka Classics is temporarily closed. The renewed exhibition will open during spring 2026.
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Electri City
Delve into smart electricity in your everyday life! What is a smart home like and how can you yourself use electricity intelligently?
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Circular Factory
Circular Factory is an exhibition of sustainable development solutions. How can familiar objects be recycled as efficiently as possible?
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Science on a Sphere
The Science on a Ball site presents data collected by satellites about climate and space, among other things.
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Main Exhibition Area
In the main exhibition area, a few old favorites are on display, such as the wire wheel and Foucault's pendulum.
Amazing audience performances
A visit to Heureka also includes various public performances, such as rat feeding shows, science shows and laboratory experiments. The performances and times for the day of your visit can be seen on the website calendar.
Heureka is a safe space
Everyone has the right to feel safe at Heureka.
When I am at Heureka,
I follow these principles for a safe space.
Bring science home from Heureka Shop
You can find the best and most insightful science gifts for all summer parties at Heureka Shop.
Currently at Heureka
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Winter 2025 tips for visiting Heureka
The most fun and interesting winter day program is a trip to Heureka! We have interesting and exciting programs for all ages.
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Gift ticket to Heureka
Give an experience as a Christmas gift - a gift card to Heureka is a joyful gift for a lover of science and culture. The ticket is valid for 12 months. Buy a gift card in the online store!
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Christmas gift ideas 2025 - best tips for men, ...
Looking for the perfect Christmas gifts? Find inspiring Christmas gift ideas for men, women and children. Order easily online from the Heureka Shop selection.
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Heureka's winter holiday camps 2026
Note! The camps are in Finnish. Are you looking for a winter holiday camp for your child in the Helsinki Metropolitan Area? Heureka is organizing two-day science camps for curious primary school children in week 8. Tickets go on sale Monday 15.12. at 2 pm.
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The renewed planetarium open 26.12.
We will open a fully renovated and state-of-the-art Planetarium 26.12.
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Photographic Memory Test online
Note! The test in in Finnish. Take Heureka's free and fun photo memory test online. Challenge your visual memory, exercise your brain, and find out how accurately you remember the details of what you see.
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NOX evenings for adults
You'll leave Heureka's NOX events smarter than you arrived. Every event has their own theme.
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Thursday evening ticket for 10 €
Note! The discount does not apply on Thursday evening 25.12. On Thursdays from 15:00–20:00, all entrance tickets are 10 €/each. Children under 5 years of age can enter Heureka free of charge accompanied by a guardian.
