Spinalonga was not an island until 1526. Venetian engineers cut a channel through the tip of the Kalydon peninsula, severing rock from shore to raise a fortress that could be supplied only by sea. That decision still governs access today: no bridge was ever built, and a Spinalonga boat trip from Hersonissos remains the standard approach along the northern coast toward the Gulf of Mirabello. The fortifications enclosed roughly 8.5 hectares of bare limestone, ringed by a curtain wall and gun platforms angled squarely at the Elounda channel. Its later chapters are better known. Between 1903 and 1957 the island held a leper colony, among the last in Europe, and the settlement's stone houses, bakery and small church of Agios Panteleimon survive along the main street. Victoria Hislop's 2005 novel The Island drew a generation of readers toward the Gulf of Elounda, and Greek television adapted it in 2010. Visitor numbers followed and never receded. The Ephorate of Antiquities of Lasithi now manages continuous consolidation of the walls, funded in part by the 20 EUR conservation fee. Full-day Spinalonga boat trip from Hersonissos tours generally fold the crossing together with Agios Nikolaos and Elounda. Architecturally the island reads as three overlaid periods. The Venetian ring wall follows the shoreline in a broken oval, its half-moon bastions named for the officers who commissioned them. Ottoman forces took the fortress in 1715 and a civilian town grew inside the walls, leaving narrow lanes and vaulted cisterns beneath the rock. The twentieth-century colony added plastered facades, a disinfection station at the tunnel mouth and a hospital on the northern slope. The tunnel itself, driven straight through the curtain wall, was known to residents as Dante's Gate. Salt wind has since stripped render from the seaward houses, and conservation crews re-point mortar through each winter. Little of this is legible from the water. The approach from the north coast crosses open sea past Sissi and Milatos, then narrows into the sheltered channel at Plaka, where the mass of masonry finally resolves into individual windows, lintels and doorways. Guided Spinalonga Island tours describe the fortress as a garrison; the ruins themselves describe a town. A Spinalonga boat trip from Hersonissos tour compresses that shift into a single day at sea, which is why the place still unsettles people who thought they already knew it from a screen. The address is plain enough — Spinalonga Island, Gulf of Elounda, Lasithi, Crete, Greece — but the island keeps its distance.