Blue Harbor Resort in Sheboygan, Wisconsin
Travel time: 2.5 hours by car
Right on the shores of Lake Michigan, the Blue Harbor Resort is a great summer destination, but its indoor water park, Breaker Bay, makes it a top-notch winter attraction, too. Kids will love the giant interactive water fort with squirt guns, cargo nets, suspension bridges and tipping water. One of the most exciting attractions is the Riptide double surf simulator, where the daring can ride the waves indoors. Families can also rent cabanas ($225 full day/$125 half-day), stocked with food and drinks (at an additional cost) as well as other amenities, to have a place to relax between water adventures. After dinner, play a round of indoor glow-in-the-dark mini-golf. There are two themed suites available for family booking—the KidAquarium suite or Boathouse suite—complete with bunk beds in a fort area and a queen bed in a separate area for the adults. Reservations start at $204 per night, and include four waterpark wristbands.