Located on Ilha Grande, Lagoa Azul (Blue Lagoon) is one of the most beautiful places and a must-see spot in the Rio de Janeiro / Paraty region. The Lagoon looks like a natural pool with calm water in a crystal clear blue color, perfect for swimming or snorkeling. You can take a trip to Lagoa Azul by renting a boat or joining one of the pre-arranged schooner tours.