Naxos Castle (Kastro)

Naxos Castle, known locally as Kastro, is the fortified medieval quarter that crowns the hill above Chora's harbor. Built by Venetian Duke Marco Sanudo in the 13th century, the fortress served as the administrative heart of the Duchy of the Archipelago for three centuries. Today its walls, tower fragments, and tight marble-paved lanes form the atmospheric core of Naxos Town's old quarter.

What to Expect

You enter Kastro through one of three arched gates—Trani (south), Paraporti (northwest), or the smaller Piso Paraporti. Inside, narrow alleys wind past Venetian mansions with marble coats of arms still visible above doorways. The stone Catholic cathedral, built in the 13th century, stands near the center. Several tower houses remain standing, some converted to small museums or cultural centers. From the northern edge near the Archaeological Museum, you look straight down to the port and across to Palatia and Portara.

The quarter is residential—locals still live in many of the old houses—so you'll walk past laundry lines, potted herbs, and the occasional cat. Plaques mark points of historical interest, and a few cafes occupy shaded courtyards. The atmosphere is quiet, especially in the morning before day-trippers arrive.

How to Get There

From the harbor waterfront in Naxos Town, walk south along the quay to Plateia Evripeou, then head uphill on Apollonos Street. The climb is steep but short—under 10 minutes. You'll pass shops and tavernas as the street narrows and the pavement turns to marble. The main Trani Gate entrance is clearly marked. Alternatively, enter from the northwest side via Paraporti if you're coming from the town hall square. There is no vehicle access inside the walls.

Tips for Visiting

• Wear grippy shoes. The marble lanes are polished smooth by centuries of foot traffic and become slippery when wet.
• Visit early or late. Midday heat reflects hard off the stone; sunrise and late afternoon light are kinder for photos and walking.
• Don't skip the side alleys. The most interesting coats of arms and architectural fragments are tucked off the main paths.
• Combine with the Archaeological Museum. It sits just inside the Kastro walls and shares a ticket with several other Naxos museums.
• Respect residents. Keep voices low, don't peer into ground-floor windows, and step aside in the narrow passages.

The History

Marco Sanudo, a nephew of the Doge of Venice, conquered Naxos in 1207 during the Fourth Crusade. He built Kastro as a fortified seat and parceled out the island to fellow Venetian nobles. The fortress walls enclosed the ruling class—Venetian Catholics—while Orthodox Greeks lived outside in the Bourgos districts below. The Duchy of the Archipelago, headquartered here, controlled most of the Cyclades until the Ottomans took Naxos in 1566.

The fortress never saw major siege warfare, so much of the medieval fabric survived. The tower houses served both defensive and residential purposes, and several incorporated fragments of earlier ancient structures. After Ottoman rule, the Catholic families gradually dwindled, but a small community remains, and the cathedral still holds services.

What's Nearby

The Archaeological Museum occupies a former Jesuit school inside Kastro, displaying Cycladic figurines, Mycenaean pottery, and Roman mosaics. A few steps outside the Trani Gate, the Mitropolis Museum houses Byzantine icons and ecclesiastical artifacts. Downhill to the west, the Bourgos neighborhood offers tavernas and the cathedral of Zoodochos Pigi. The harbor is a five-minute walk down, and Grotta beach lies just north along the waterfront.

Best Time to Visit

Kastro is open year-round with no gate hours or admission fee for the lanes themselves. Spring (April–May) and autumn (September–October) offer the most comfortable temperatures for uphill walking. Summer mornings before 10 a.m. are ideal if you're visiting in high season. Winter sees fewer visitors and occasional rain, but the stone quarter has a moody, austere beauty under grey skies.