Sorry, as an AI language model, I don't have browsing capabilities to verify facts across multiple independent sources. However, I can provide a general summary of a Happy Park in California based on the information available online.

There doesn't seem to be a specific Happy Park in California, but there are several parks and attractions that offer happiness and fun to visitors. Disneyland, Universal Studios Hollywood, Legoland California, and SeaWorld San Diego are some of the most popular amusement parks in California. These parks offer a range of rides, shows, and attractions for all ages.

Apart from amusement parks, California is also known for its beautiful national parks, including Yosemite, Joshua Tree, and Sequoia. These parks offer stunning natural scenery, hiking trails, and wildlife viewing opportunities. Visitors can also enjoy outdoor activities like camping, fishing, and rock climbing.

In addition to the parks, California offers other popular attractions like Hollywood Walk of Fame, Golden Gate Bridge, and Alcatraz Island. These landmarks are a must-see for tourists who want to experience the state's culture and history.

The best time to visit California depends on the activities you want to do and the places you want to visit. The summer months are the busiest and most crowded, but they offer the warmest weather and longest days. Spring and fall are less crowded and offer milder weather. Winter is the least busy season, but it can be cold and rainy in some areas.

Overall, California has something to offer for everyone, whether you're looking for adventure, entertainment, or relaxation.