For generations, the men of this island descended to the sea floor clinging to a flat stone, the skandalopetra, to tear sponges from the rocks. Kalymnos built its fortune, its grief, and its pride on this extraordinary trade, and Pothia, its capital, keeps that memory alive at every street corner. This little-known stop ranks among the most endearing in the Dodecanese, precisely because it has never dressed up its history for anyone.

Pothia, an Amphitheatre of Colour

The town climbs in an arc around its harbour, mixing captains' houses in shades of ochre, blue, and saffron, a legacy of the boom years of maritime trade. Everything from the landing is within walking distance. The waterfront lines up caïques, cafés, and stalls where natural sponges dry, golden and irregular, still the source of the local reputation; their briny scent follows the walk the length of the docks. Behind, a maze of stairways and lanes climbs toward the heights; it's easy to wander here, past laundry hanging from windows and sleeping cats, until you come out onto an unexpected view. The shops around the harbour also sell thyme honey from the hills, dried oregano, and herbs that grandmothers here still pick themselves: a suitcase worth filling with scents rather than trinkets.

The Sponge Divers' Museum

About 700 metres from the dock, near the town hall, the Maritime Museum tells the story of the divers' epic: ballast stones, canvas diving suits with copper helmets, photographs of fleets departing in the early twentieth century, when hundreds of men left the island for months at a time, bound for the fishing banks of North Africa. The accounts of decompression accidents, which the islanders paid for dearly, give a sense of the courage required. Admission is free, and the small Folklore Museum next door rounds out the picture with traditional costumes and interiors.

Not far off, workshops open their doors: visitors can follow the transformation of the raw harvest, cleaned, beaten, then sorted by size before sale. Leaving with one of these sponges means taking home a piece of the island's heritage, far more than a simple bathroom souvenir. Sellers are happy to explain how to tell a real sea sponge from synthetic imitations: the real one, they say here, forgives everything, even the years.

Famous Cliffs and Quiet Coves

Over the past twenty years or so, a new tribe from all over the world has adopted Kalymnos: climbers. The limestone walls overlooking the west coast rank among the most renowned in Europe, and their colourful ropes can be seen clinging to the overhangs, especially in spring and fall, when the rock stays cool. This sporting crowd has given the island a second youth, without altering its character.

Without touching the rock, a taxi can take you to the coast at Myrties and Masouria, facing the islet of Telendos, for a long lunch of grilled fish, feet practically in the water. The pebble beaches here slope down into a sea of startling clarity.

For a Well-Balanced Day

• Morning: Pothia's waterfront, the maritime museum, and the upper lanes.
• Midday: a taverna on the harbour or the west coast; try the sun-dried octopus.
• Afternoon: Myrties and the view over Telendos, or simply a coffee facing the caïques.

Sponges are rarer today, decimated by disease, and the diving suits now sleep behind glass. But watching the old men of the harbour gaze out at the sea is enough to feel that nothing here is truly over: the island waits, as it has always waited for its divers. Casting off, you find yourself hoping, along with it, that the sea will one day give back what it took.