Kalymnos Island, Greece.
By air: Kalymnos now has a small and dramatically sited airport at a distance of 5.5km from Póthia, served by Olympic Air, providing connections with Athens five times a week, mostly with a stop en route at Astypalaia.
By boat: There are daily services by catamaran (Dodecanese Express), and four times weekly by car ferry (F/B Nisos Kalymnos), south to Kos, and north to Leros, Patmos (& Samos—ferry only). There are daily boats to Piraeus and to Rhodes, operated by GA Ferries, making also twice weekly stops at Tilos, Nisyros and Symi on the way to Rhodes.
The faster Flying Dolphin services link Kalymnos (Póthia) also with the smaller Dodecanese Islands between Samos in the north and Rhodes in the south, and run daily in summer. There are daily services in summer (only intermittently out of season) between Póthia and Pserimos, and between Myrtiés and Xerókambos on Leros, weather permitting.
Kalymnos Travel Guide