Plizio Visual Lab

Bourtzi Castle

Plizio editorial teamUpdated: Jun 2026Data Sources

castle

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Bourtzi Castle in Nafplio is a distinct Venetian water fortress located on the islet of Agioi Theodoroi in the middle of the harbor. Designed by the Italian architect Antonio Gambello and completed in 1473, its primary purpose was to safeguard the strategic port from pirates and naval invaders. The name 'Bourtzi' is derived from the Turkish word for tower or stronghold. The fortification is masterfully integrated into the islet's rocky terrain, featuring a prominent central tower and several semi-circular bastions. During the 19th century, the castle had a dark history as the official residence of the state executioners, who were barred from living within the city of Nafplio. In the 1930s, the structure was briefly converted into a hotel by German architect Schaub before transitioning into a protected historical landmark. Today, it is accessible via short boat rides from the waterfront and serves as a scenic venue for cultural festivals and concerts, remaining an enduring symbol of Nafplio.

Location: Greece
Top sights: Bourtzi · Nafplio lighthouse · Venetian Aqueduct
Nearby: Nea Kios (4 km)

Best time to visit & climate

The most pleasant time to visit is May, Sep, Oct.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	10	10	13	15	20	25	28	28	24	20	16	12
Rain mm	80	70	56	32	25	22	14	10	32	53	76	92

📋 Practical info

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Visiting

The castle on the island can only be viewed from the outside, as it is not open to the public. However, it is clearly visible from the port of Nafplio.

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Typical hours

Since the castle cannot be entered, there are no opening hours. The best view is during daylight, ideally in the late afternoon.

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Photography

Photography is possible without restrictions from the shore and from boats. For close-ups, a telephoto lens or binoculars are recommended.

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Time needed

A short 10-15 minute stop at the port is enough to view the castle and take photos. For a boat tour around the island, allow 30 minutes.

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Combine with

Combine your visit with a walk through the old town of Nafplio and the Palamidi fortress. Both attractions are within walking distance.

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Getting there

The castle is best seen from the port of Nafplio, which is easily accessible on foot. Water taxis offer short trips around the island.

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Insider tip

Book a short boat ride at sunset for an unforgettable view of the castle. Bring a camera to capture the golden light.

Geography

Coordinates

37.56940, 22.78970

Facts

The fortress was completed in 1473 during the first Venetian occupation.
Antonio Gambello was the lead architect responsible for its unique design.
From 1865 to 1930, Bourtzi was the mandatory residence for Nafplio's executioners.
The castle operated as a boutique hotel during the mid-20th century.
An iron chain once connected the island to the mainland to block enemy ships.
The fortress spans the entire surface of the tiny island of Agioi Theodoroi.