Post Office Bay is located on Floreana Island in the Galapagos and is renowned for its historical significance and unique postal tradition. What makes this place unique is its centuries-old system where sailors would leave letters in a barrel to be picked up and delivered by other passing ships, a tradition that continues today with visitors leaving and collecting postcards. Travellers visiting Post Office Bay can explore the famous mailbox, venture into nearby lava tubes, and enjoy a dinghy ride along the mangroves and coves, where they might spot sharks, rays, turtles, and sea lions.