2. The Volcanoes National Park: Located on the Big Island of Hawaii, Volcanoes National Park is a UNESCO World Heritage Site that offers visitors the opportunity to witness active volcanoes, volcanic landscapes, and unique ecosystems. The park is home to Kīlauea, one of the most active volcanoes on earth, as well as Mauna Loa, the largest volcano in the world by volume. Visitors can explore lava tubes, hike through rainforests, and learn about the geological history and cultural significance of the area.