Our Santorini adventure continued on as we explored Santorini’s other, more well-known, and visited town , Oia . Taking the bus in the island is the more fun and hassle-free way of getting around as it can get rather expensive to rent a car (especially if you only plan to explore the towns and not the beaches), and taxi cabs are few and far between . * While Fira is Santorini’s capital and busiest town, Oia is where all the tourists and couples flock to experience Santorini’s picturesque beauty .