10. San Diego, California
San Diego is a family-friendly destination with sights such as the Legoland, Sea World, Balboa Park, and San Diego Zoo. It’s rich in lush public parks, waterfronts, and beaches. California’s second largest city boasts of an eclectic mix of hotels, restaurants, and spas perfect for leisure travelers. San Diego also has a famous historic part of the city called the Gaslamp Quarter where you can find art galleries, pubs, and quaint shops. It may be a big city but it has the small town vibe to it.