Ocean Park has what few places in Hong Kong do: a lot of space! It is built on both sides of a hill (connected by a scenic cable car ride or an express but less scenic train ride, both in the park itself). It is great for families with children of all ages. The first side has lots of animal exhibits, gentler rides for little kids and mellow adults, a quaint "Old Hong Kong" reconstructed street, and pay-as-you-go games that your little ones will love. The far side has the serious rides, theatres for dolphin shows, and more.
Travelers to Hong Kong, as well as those who live here, must pay a visit to Ocean Park. We love it so much we have had annual passes for three years now!