Final answer:
Gros Piton and Petit Piton are located in St. Lucia, an island nation in the eastern Caribbean Sea, and are known for their dramatic appearance and natural beauty.
Step-by-step explanation:
The country that has Gros Piton and Petit Piton, which are iconic landmarks that rise out of the ocean at Soufrière Bay, is St. Lucia.
These two mountainous volcanic spires are part of a UNESCO World Heritage Site and are among the most recognizable features of the island nation, known for their breathtaking natural beauty and attracting tourists from around the world. St. Lucia is situated in the eastern Caribbean Sea and forms part of the Lesser Antilles.