A Princess of Mars. by Edgar Rice Burroughs

In A Princess of Mars, John Carter is transported to a Mars inhabited by strange civilizations and embarks on various adventures on his quest home. Often held up as a seminal example of pulp science fiction, A Princess of Mars is the first entry in Burroughs' epic Martian series, and the first to feature the character of John Carter. Though often categorized as just a pulp adventure tale, A Princess of Mars was hugely influential on many budding science fiction writers, professional scientists, and explorers of the day.
The novel remains a light, fast-paced, and enjoyable read, and continues to inspire adaptations nearly a hundred years after its publication.