What did it mean to enter unknown territory before modern maps existed? This chapter explores the journeys of navigators, merchants, and explorers who crossed oceans, deserts, and continents. From Polynesian expeditions and Asian trade routes to European voyages of expansion, it reveals how curiosity, commerce, ambition, and necessity drove major movements across the world. It also examines the dangers of navigation, mistakes in early maps, and encounters between societies that already possessed their own histories and knowledge. A journey through the expeditions that connected distant regions, changed humanity’s understanding of the planet, and produced exchange, conflict, conquest, and lasting consequences.