Fortress of San Giovanni: Kotor's Hilltop Fortress Above the Old Town

What Is the Fortress of San Giovanni?

The Fortress of San Giovanni, also known as the Castle of San Giovanni or simply St. John's Fortress, is a medieval fortification that crowns the rocky ridge directly above Kotor's Old Town. At roughly 260 metres above sea level, it is the highest and most architecturally significant point of the defensive circuit that encircles Kotor, and it forms the visual anchor of the entire walled city when seen from the bay.

The fortress is not a standalone building you visit from the outside. It is the culmination of a continuous climb along Kotor's famous city walls, which wind up the mountain through towers, terraces, and ruined chapels before reaching the summit fortification. You gain context for the fortress by reading the walls on the way up, not by arriving at a single entrance gate.

Visiting the fortress means engaging with Kotor's city walls as a whole. The walls stretch for approximately 4.5 kilometres and include around 20 towers. The San Giovanni fortress at the top is the point at which those walls converge, and standing inside its ruined keep gives you the clearest sense of how comprehensively the medieval builders controlled this valley.

The Climb: What to Expect on the Way Up

The ascent begins inside the Old Town, typically from the northern section near the Church of Our Lady of Remedy, which sits partway up the hillside and marks roughly the halfway point of the climb. The path is constructed almost entirely of stone steps, estimated at around 1,350 in total, though sections of the wall near the top transition to rough stone slabs and uneven terrain that requires more careful footing.

The lower third of the climb passes through shaded sections with stone walls on both sides, which makes it more manageable in the heat. The middle section opens up onto the hillside, where you begin to see the rooftops of the Old Town below and the first proper views of the bay spreading westward. This is also where most visitors stop for their first real rest. The air carries the smell of wild herbs growing from the limestone cracks, sage and thyme prominent in summer, and the sound of the city below becomes a distant hum.

The upper third is the most exposed and the most dramatic. The walls here are in partial ruin but the scale becomes clear: these were serious fortifications built to withstand sustained military assault. The final approach to the San Giovanni fortress itself passes through a narrow gate and opens into a roofless but largely intact stone enclosure with views in every direction.

History: From Byzantine Citadel to Venetian Stronghold

The origins of fortification on this ridge are Byzantine. Early defensive structures appear to have existed here from at least the 6th century, making use of the natural advantage of the steep limestone hillside. Kotor passed through the control of several powers over the following centuries, including periods under Serbian medieval rulers, before the city came definitively under Venetian rule in 1420.

The Venetians were the most consequential builders of the fortress and the city walls as they exist today. Over the course of their rule, which lasted until 1797, Venice expanded and reinforced the fortifications repeatedly, responding to the persistent Ottoman threat. The San Giovanni fortress was central to this defensive strategy: control of the hilltop meant control of the entire valley, and the walls sweeping down both sides of the ridge connected the fortress to the sea-level gates of the city.

The fortifications proved their worth during the Siege of 1539, when Ottoman forces failed to take the city despite a sustained assault. That episode is commemorated annually in Kotor and remains a source of civic pride. For more on the history of the walled city and how its streets reflect those столетия конфликтов, the Kotor Old Town walking tour covers the key sites at ground level.

After the fall of the Venetian Republic, the fortress passed to the French briefly under Napoleon, then to the Austro-Hungarian Empire, which made additional modifications before the city became part of Yugoslavia in the 20th century. The fortress today is an unrestored ruin, which is precisely what makes it compelling. There are no reconstructed interiors or museum displays. What remains is stone, views, and the weight of the site's history.

The View from the Top: What You Actually See

The panorama from the San Giovanni fortress is the most complete view available of the Bay of Kotor from any point directly above the Old Town. To the west, the inner bay stretches toward Perast, its two islets visible on clear days as small dark patches on the grey-green water. To the south, the Adriatic coastline extends beyond the bay's narrow southern mouth. The red-tiled rooftops of Kotor's Old Town spread directly below, compressed into a tight geometric pattern by the steep perspective.

To the north, the slopes of Mount Lovćen rise sharply, and on clear mornings you can see the faint outline of the Mausoleum of Petar II Petrović Njegoš near the summit. That monument is visible from here as a pale speck against the grey rock. For those interested in making the trip up to Lovćen itself, the Lovćen mountain viewpoint and Lovćen National Park offer a complementary perspective looking back down toward Kotor.

The light changes significantly across the day. Early morning brings a soft, directional light that picks out the texture of the rooftops and walls below. Midday flattens everything and the heat haze can reduce visibility across the bay. Late afternoon, particularly in the hour before sunset, casts long shadows across the valley and turns the water a deep bronze. Sunset from the fortress is spectacular, but the descent in fading light is a different challenge altogether.

Practical Details: Getting In and Navigating the Site

The Fortress of San Giovanni is accessed as part of the city walls ticket, which covers the entire wall circuit including all towers and the summit fortress. The ticket is purchased at the wall entrance points inside Kotor Old Town. The most commonly used entry point for the fortress climb is near the Church of Our Lady of Remedy, reached by walking northeast through the Old Town from the main Square of Arms.

There are no facilities at the top: no toilets, no food vendors, no shade structures. Water is essential. One litre per person is the minimum for the climb in moderate weather; carry more in summer. The walls are typically open from early morning until around 11:00 PM in summer, with reduced hours outside peak season. Confirm current hours at the ticket booth, as they can change.

Accessibility is limited. The steep, uneven stone steps make this route unsuitable for wheelchairs and difficult for visitors with mobility limitations or young children in pushchairs. Older children who are steady on their feet manage the climb well, but the upper sections require confidence on rough terrain.

Honest Assessment: Is the Climb Worth It?

The Fortress of San Giovanni is the single most rewarding physical experience Kotor offers, but it is not for everyone. The climb takes between 45 minutes and 90 minutes depending on fitness and how long you pause. The steps are relentless, the upper section is exposed to direct sun, and descending on tired legs on uneven stone requires concentration. None of this is dangerous for a reasonably fit adult, but it is more strenuous than many visitors expect based on photos alone.

Visitors who find the climb too demanding can still access excellent views of the bay from lower points on the wall circuit, or from other vantage points around Kotor. The Kotor viewpoints guide covers alternatives including viewpoints reachable without a significant climb.

For those who do make it to the top: the fortress delivers. There is a particular satisfaction in reaching the summit and looking down at the walled city you have spent the morning exploring at street level. The scale of the fortifications only becomes intelligible from up here, and the view across the Bay of Kotor on a clear morning is genuinely difficult to forget.

The lack of restoration is also a feature rather than a flaw. The fortress is not a theme park version of a medieval citadel. It is the actual thing, worn and crumbling and magnificent, with none of the interpretive boards or audio guides that would domesticate the experience. You are left to make sense of the walls and towers yourself, which rewards visitors who come prepared with some knowledge of the history.