It's a science center in fact with interactive shows about human anatomy, biology, medicine, environment and energy. Open for public on weekends only from 10 am to 6 pm. Website in Polish only. Read more.
Great place with almost 900 species of animals. Also historic buildings here. Open daily from 9 am until 4-7 pm (depending on season), feeding times mostly betwen 11 am and 2 pm. Website in Polish. Read more.
More than 12000 species of plants right in the middle of the city. Big trees, mountain, water and marsh ecosystems. Open from 1st April until 30th November, from 8 am to 6 pm. Website in Polish only. Read more.