On a rainy day, České Budějovice is a great choice. The biggest attraction is the swimming stadium with water slides, sauna and children's pool, ideal for small and large water lovers. In addition, you can visit one of the city's museums - for example, the South Bohemian Museum, which often offers interactive exhibitions for children.
Other options? The planetarium and observatory, cinema, contemporary art gallery, or a visit to the Budvar brewery with a tour of the operation. When the weather calms down, you can take a walk around the historic centre or to the lookout tower on the Black Tower.