Without a doubt, San Diego is one of the best vacation destinations for families in the United States. Not only is the weather almost guaranteed to be sunny and (reasonably) warm, but there's tons for you to keep the kids entertained and having fun. Not only is the town of La Jolla one of the prettiest (and hippest) in all of California, but it's the beach that you can't even walk on that will have the kids—and their parents—super excited. Because a large harbor seal population has taken residence on the beach that was originally conceived as a protected swimming area for children, visitors are roped off from getting too close to the marine life. That doesn't mean you can't get a great view. La Jolla Cove and La Jolla Shores Park are perfectly fine for strolling and exploring all the fascinating features that reside outside the waters. And stick around for sunset if you can. It's one of the most dramatic in the country!