Things to do with kids in Marazion.

The defining experience of Marazion: a tidal island topped by a medieval castle and sub-tropical gardens, connected to the mainland by a granite causeway walkable for approximately four hours around low tide. The crossing itself is an adventure — children inspect starfish in the causeway pools and arrive on an island inhabited for over a thousand years. The National Trust castle has family trails and audio guides. The gardens above the harbour are beautiful. At high tide, the ferry runs regularly from the beach.

The largest reedbed in south-west England, immediately behind the eastern end of Marazion Beach, managed by the RSPB as a reserve for wintering wildfowl and breeding marsh birds. The viewing screen overlooks open water where bittern, marsh harrier and rare migrants have been recorded. The reserve is free to enter, the paths are flat, and the combination of beach and birdwatching suits families who want a change of pace from the water. Best in winter for duck species and passage waders in autumn.

At very low tide, Marazion's beach connects to Long Rock in an unbroken sweep of sand extending two miles east — one of the longest accessible tidal beaches in Cornwall. Walking this stretch gives children the sense of having genuinely explored, and the views across Mount's Bay improve as you move further from the village. The walk is flat, firm and suitable for all ages. Return before the tide turns — beach access can be cut off within an hour if timing is misjudged. The Mount remains in view throughout.