Six Flags Magic Mountain

It's located right next door to Magic Mountain, but this water park requires a separate admission and you have to go through the entrance gates to get from it into the other park. Inside, you'll find 13 water rides, ranging from gentle water play areas suitable for everyone to the max thrills of Black Snake Summit (the two tallest, fully-enclosed water slides in Southern California), Taboo Tower (shown above) and Tornado.

If you plan to visit Hurricane Harbor and Magic Mountain together, a combo ticket will save you money.