Mauritius, an Indian Ocean island nation, is known for its beaches, lagoons and reefs. The mountainous interior includes Black River Gorges National Park, with rainforests, waterfalls, hiking trails and wildlife like the flying fox. Capital Port Louis has sites such as the Champs de Mars horse track, Eureka plantation house and 18th-century Sir Seewoosagur Ramgoolam Botanical Gardens. ― Google

Réunion Island, a French department in the Indian Ocean, is known for its volcanic, rainforest interior, coral reefs and beaches. Its most iconic landmark is Piton de la Fournaise, a climbable active volcano standing 2,632m (8,635 ft.). Piton des Neiges, a massive extinct volcano, and Réunion’s 3 calderas (natural amphitheaters formed by collapsed volcanoes), are also climbing destinations. ― Google