Aquaria, water museum, located at Djurgården

Fjärilshuset, the Butterfly house at Hagaparken

Junibacken, museum for children, located at Djurgården

Skansen, zoo and outdoor museum, located at Djurgården

Vasamuseum, located at Djurgården

Never been to Gröna Lund yet with the boys, if you like amusement parks, go to Gröna Lund