There are two UNESCO World Heritage Sites; Vallee de Mai Nature Reserve and the Aldabra Atoll.
Vallee de Mai is well-preserved palm forest and the home of endemic coco de mer trees; which has the largest seeds of any plant in the world. The reserve is also unique to the rare Seychelles black parrots. The palm forests were naturally formed and thus, has a great aesthetic appeal.
Aldabra Atoll consists of four coral islands which surround a shallow lagoon. The islands are surrounded by a coral reef, making this island quite difficult to access. Therefore, the island is protected from human interference which has helped the island retain more than 150,000 giant tortoises. In fact, this is the only place where this reptile is found in abundance.