Located in Alaska’s Kachemak Bay State Park, Halibut Cove is nestled among mountains, glaciers and forests and is accessible only by boat. It’s home to just 38 people, according to the 2010 Census, and one of the only floating U.S. post offices is located here, along with a popular floating coffee shop. The cove is lined with stores, cabins and art galleries, which are also accessible only by boat, and you’re likely to see a variety of wildlife, including sea otters, harbor seals and humpback whales.