Trempere, Finland is better for most time periods to visit. So as you wish, I think Tempere is suitable.
The theme park in Finland is located near Tampere. Särkänniemi's 550,000-liter aquarium is home to over 3,000 animals from 200 different species. Mangrove wetlands on the aquarium's lower level are home to blowfish, monos, archer fish, gourami fish, and rainbow sharks.
The Children's Zoo, which opened in 1970, has over 30 different animal species, and the 168-meter-tall Näsinneula observation tower, which was built in 1971, has a café on the top floor. The Sara Hilden Art Museum houses a large collection of modern Finnish art, and the creepy carnival is held every year in the fall.
https://travellifo.com/16-best-attractions-in-tampere-things-to-do/
Vapriikki Museum Centre
This Cone Center, dubbed the "Museum of the Century" in 2017, houses eight sub-museums. They do, Tampere Natural History Museum is located in Tampere, Finland. Museum of Rupriikki Media Museum of Finnish Sports The Finnish Ice Hockey Museum and Hall of Fame The Postal Museum Museum of Dolls and Costumes Regional Museum of Pirkanmaa