Margaret Island's Palatinus Beach is perfect for kids in summer - thermal pools, slides, shallow areas for toddlers. Entry around 2000 HUF adults, kids under 2 free.

Budapest Zoo is compact and good for short attention spans. The vintage carousel nearby always wins. Tropicarium (aquarium with sharks) works for rainy days.

Transport tip: kids under 6 ride free on public transport. Tram 2 along the Danube is basically a sightseeing tour but they don't know they're learning.

Avoid ruin bars obviously. Family restaurants in Buda often have playgrounds attached.