Covering most of Mount Desert Island and other coastal islands, Acadia features the tallest mountain on the Atlantic coast of the United States, granite peaks, ocean shoreline, woodlands, and lakes. There are freshwater, estuary, forest, and intertidal habitats.

From Hawaii to Alaska and the Cascade Volcanic Arc, there are the U.S. national parks with volcanoes, such as Crater Lake, Lassen and Katmai.

Looking for the coolest things to do in Acadia National Park? These are the spots you can't miss plus we added a tons of useful tips for your visit.

Bumpass Hell in Lassen National Park.