Postcard Acadia National Park T-ShirtAcadia National Park protects the natural beauty of the highest rocky headlands along the Atlantic coastline of the United States, an abundance of habitats, and a rich cultural heritage. At 4 million visits a year, it's one of the top 10 most visited national parks in the United States. Everyone will know you are a fan when you wear this Postcard Acadia National Park T Shirt!