Warm sea, painful pebbles, and a narrow-gauge train into the mountains behind.
Parc Phoenix
A botanical park near the airport with a glasshouse, aviaries, ponds and a playground — cheap, shaded and good for two to ten.
Castel Plage and the pebbles
The water is warm and clear, the stones are merciless. Buy water shoes on day one and rent a mattress rather than lying on shingle.
Monaco's oceanographic museum
Twenty-five minutes by train, then a cliff-top aquarium with a shark lagoon and a touch pool. Half a day, from about age four.
Train des Pignes
A narrow-gauge line climbs from Nice into the hills to Entrevaux, a walled village with a castle. Three hours each way; take snacks.
Shade, shoes and dinner
The Prom has almost no shade — plan for morning beach and afternoon indoors. Trams take strollers; restaurants seat families from seven.