The Särkänniemi Planetarium runs dome shows on astronomical themes, with programmes in Finnish. Show times vary by season — summer has more frequent programming aimed at families, while autumn and winter focus more on serious astronomy with longer shows.
Located within the Särkänniemi complex, the planetarium is worth including if you are already visiting the aquarium or the observation tower. Children respond well to it; adults find it more or less interesting depending on their tolerance for popular-science presentations.