As the Big Island's top attraction, Hawai’i Volcanoes National Park is the perfect place to learn about the geological history of the Hawaiian Islands. Two volcanoes, Mauna Loa and Kilauea, can be visited inside approximately 500 square miles of a natural environment. About 90 percent of Hawaii's trees, plants, and flowers are endemic. They cannot be found anywhere else in the world. The remaining species are either indigenous (in Hawaii and elsewhere) or non-native (introduced by mankind).