Over the past 40 years, Baltimore, Maryland has been successfully transforming its Inner Harbor area into an extremely family-friendly destination, complete with a science museum, a children's museum, and a world-class aquarium - all set on the water's edge. There are paddle boats and a real submarine, cafes with outdoor seating and places to buy ice cream to enjoy while you stroll along the harbor. Even better, it's in a relatively compact area -- not spread out all over the entire city -- and one that even little legs can negotiate with a few breaks here and there. In short, it's the perfect locale for a family vacation in Baltimore with kids.
Insider tip: If you are planning on being in Baltimore for several days and visiting more of the Inner Harbor attractions, look into the Harbor Pass, which gives you discounted admission to the National Aquarium, the Maryland Science Center, the Top of the World observation level, Camden Yard's Sports Legends Museum, the Port Discovery Museum or the American Visionary Art Museum.