Culzean Castle and Country Park - This 18th century castle perched on the cliffs has spectacular views of the Firth of Clyde. No crumbly castle, check out the sweeping circular staircase, Armoury with a large collection of weapons, swords and armor beautifully displayed, multiple dining rooms, spiffy bedrooms, one with a portrait of Napoleon. Family tours are available on weekends.
Adventure Cove Play Park is a large play area with kid-size castle for kids to climb, jump, slide down, and run around.
Take the Happy Valley trail to the Swan Pond, grab a snack in the cafe. Explore the landscaped gardens, then go out for a run on the beach or build sand castles.