Springfield, Massachusetts, is a fantastic destination for families looking for a mix of fun and education. You can explore the interactive exhibits at the Springfield Museums, enjoy the beautiful Forest Park with its playgrounds and walking trails, and visit the Dr. Seuss National Memorial Sculpture Garden, which is sure to delight both young children and teens. The city offers a variety of sensory-friendly activities and green spaces that are perfect for a 3-year-old and a 13-year-old with autism, making it an ideal spot for your 12-hour trip.

Northampton, Massachusetts, is a vibrant and welcoming city known for its family-friendly attractions and cultural diversity. It offers a mix of interactive museums, parks, and creative spaces that are perfect for both young children and teens, including those with autism. The city's inclusive community and sensory-friendly environments make it an ideal spot for a stimulating and enjoyable day trip with your family.