Did you know that Colorado is home to North America’s tallest sand dunes?  Welcome to the Great Sand Dunes National Park and Preserve, North America’s tallest dunes, towering as high as 750 feet. My multigenerational family road tripped to the Great Sand Dunes for the first time, experiencing sand, water and lots of laughter. This national park road trip still tops our list of favs. Here are our tips for visiting the Great Sand Dunes National Park Colorado.