Delaware: Rehoboth Beach

Price: Free, though some attractions cost money

Location: Rehoboth Beach, south of Dover

Shopping is one of the best things to do in Delaware, thanks to the state's lack of sales tax. However, America's First State also boasts one of the country's top-ranked beaches. Along Rehoboth Beach, you'll find great attractions for kids, such as Jungle Jim's River Safari Water Park and Funland, which charges on a "pay as you go" basis.