O Loan Lagoon is a picturesque freshwater lagoon located in Phu Yen. It is surrounded by lush greenery and offers a peaceful and serene environment. Explore the lagoon by renting a boat and cruising through its calm waters. Admire the diverse flora and fauna that call the lagoon home. If you're lucky, you might spot some migratory birds that visit the lagoon during the summer. Don't forget to capture the stunning sunset views over the lagoon.