Be honest with yourself: the town's own sights are a bone chapel and three churches, so with children the good days here are the ones that start in Kutna Hora and end a few kilometres outside it.
Dacickeho dum
Komenskeho namesti 41, open daily 10:00-18:00. A late Gothic house fitted out with touchscreens, motion sensors, a touch table, animated films and things hidden in the floor, built around an exhibition of every Czech UNESCO site in one room. The one indoor hour in town designed for children.
Zamek Kacina
The National Agriculture Museum's empire chateau at Svaty Mikulas, a few kilometres east. Open daily 09:00-17:00 June to August and 10:00-17:00 in September, with weekend-only hours later in the year. 180 Kc adults, free for under-18s, plus a bee kingdom exhibition, costume hire, a cafe, free parking and grounds to run in.
Zamek Zleby
Zamecka 1, Zleby: a romantic nineteenth-century Auersperg residence with a weapons collection and interiors kept as an aristocratic household, plus a park with bike racks and a snack kiosk. Guided tours only, and free-admission Sundays sell out well in advance.
Vodni svet Kolin
Masarykova 1041 in Kolin, up the line towards Prague: indoor pool, outdoor swimming area, children's pools and paddling areas, plus tennis 09:00-20:00, beach volleyball 09:00-20:00 and minigolf 12:00-18:00. Check before travelling - it closed for maintenance from 1 to 10 September 2026.
Zoo Chleby
A small zoo at Vaclava Otty 1 in Chleby, out towards Nymburk, open 09:00-18:00 every day of the year. Around 180 species and 420 animals, feed on sale so children can hand-feed some of them, plus playgrounds and a shop. Realistically a car trip rather than a bus one.