Farmer Fred's Harvest Fall Carnival is a fall festival held at Old Settlers Park in Round Rock, just a short hop from Austin. It's a laid-back way to celebrate autumn with the whole crew, and it's a perfect fit for a Halloween-season outing. The park's wide, open grounds make it easy to wander from one spot to the next with little ones in tow. Bring your appetite, your comfy shoes and your family, and enjoy a harvest-themed afternoon full of seasonal fun.