In Haltia there's also interesting temporary exhibitions indoors:
Nature Photograpy of the Year 2019 pictures 23.10.2019-5.1.2020, read more in Finnish
Forest like a fairytale by Saara Alhopuro in Haltia 3.10.-9.12.2019, read more
Best of "Nature picture of the year 2016-2018"
The Forest Full of Teddy Bears until 12.1.2020
Archive of the previous Temporary exhibitions: