Last frontiers is a phrase that generally refers to the wild and unexplored areas beyond civilization. These last frontiers might be isolated islands, dense forests, or vast deserts where few people have traveled. If you're looking for synonyms for "last frontiers," there are several words that come to mind. For instance, "uncharted territories," "virgin lands," and "unspoiled wilderness" all evoke a sense of adventure and exploration. Other possible alternatives include "remote areas," "untamed wilderness," and "frontier country." Whether you're a thrill-seeker or a conservationist looking to protect our planet's remaining wild places, there are many words that capture the spirit of the last frontiers.