Kalymnos is a captivating Greek island renowned for its rock climbing, crystal-clear waters, and sponge diving history. The island is accessible via ferry from neighboring islands or by flights from Athens to Kalymnos National Airport. While exploring solo is feasible and enjoyable due to the island’s manageable size and friendly locals, booking a guided climbing tour is recommended for the best experience and safety. The prime time to visit is between April and October for the warmest weather and optimal climbing conditions. Accommodation and food are relatively affordable. Plan to spend at least 3-4 days to fully indulge in both the adventure and relaxation opportunities, including visits to the picturesque villages, ancient ruins, and stunning beaches.