There is a particular kind of October morning here when the air goes thin and clear, the humidity drops out of it, and suddenly you can see Formentera so sharply from the south coast that it looks like you could swim there before lunch. This is the light that Ibiza's coastal watchtowers were built for. Between the sixteenth and eighteenth centuries, the island ringed itself with stone lookouts so that a sentry standing on one could see the next, and a bonfire lit at dusk on the southern cliffs could carry a warning north across the whole island within the hour.
Four hundred years later, that same sightline logic makes the towers the best walking network on the island. Every single one of them was sited for the view. Not a scenic view — a functional view, the kind that has to hold in haze and half-light. Which means that if you follow the watchtowers of Ibiza on foot, you are essentially being guided from one perfect vantage point to the next by a sixteenth-century military engineer who cared about exactly the same thing you do.
Autumn is when you should do it. In August these walks are punishing; there is almost no shade on any of them and the rock holds heat like a griddle. By late September the ground has cooled, the pines smell stronger after the first rains, and the paths that were dust in summer have firmed up. The towers are also, unusually for Ibiza, completely free and open at every hour, which is not a sentence you get to write often about this island.
The southern pair: salt flats, dunes and the easiest tower on the island
Start with Torre de ses Portes, at the very southern tip, because it is the gentlest introduction and the most atmospheric approach. You leave the car at the far end of Ses Salines and walk east along the shore, threading between low dunes, sea daffodils and stands of juniper until the land narrows to a point. The tower sits at the end, tall and unusually well restored — it was one of the first the island put money into. The walk is flat, takes about twenty-five minutes each way, and you are looking at Formentera and the islet of s'Espalmador the whole time.
The history here is genuinely clever. Ses Portes did not work alone. It was paired with a second tower across the water on s'Espalmador, and the two were positioned so their cannon fire would cross in the middle of Es Freus — the channel between the islands — making it very difficult for a hostile ship to slip through. Stand at the base and you can read the geometry of it without anybody explaining.
Twenty minutes up the coast, Torre de sa Sal Rossa (also called Torre des Carregador, the Salt Loader's Tower) guards the southern end of Platja d'en Bossa. It is one of the oldest on the island and it was built for an entirely commercial reason: the salt pans and the people working them were being raided, and salt was the island's fortune. It is a short scramble up from the beach, five minutes, and it is also the only defence tower on Ibiza that runs guided interior visits — worth arranging in advance if you want to see the inside of one rather than just its silhouette.
Torre des Savinar: the one everybody photographs, and the ten minutes most people skip
Everyone knows the Es Vedrà viewpoint. Almost nobody walks the extra stretch above it.
Torre des Savinar — also called Torre d'en Pirata or Torre des Cap des Jueu — sits at around 200 metres on the cliff edge above Cala d'Hort, roughly ten minutes uphill on a rough stone path from the main car park viewpoint. Those ten minutes are the entire difference between a photograph you have seen a thousand times and a place you will actually remember. From the viewpoint, Es Vedrà is a postcard. From the tower, you are above it, with Es Vedranell stretched out alongside and nothing between you and the drop but scrub and salt air.
It was finished in 1763 to cover the island's exposed southwestern flank. Blasco Ibáñez put it in his novel Los muertos mandan, which is part of why it carries such a heavy romantic reputation among Spanish visitors.
Practical notes, because this one catches people out: wear real shoes, the path is loose rock and there is no railing anywhere. Go for sunset but bring a head torch, because coming down that path in the dark on a phone light is how people turn an ankle. In early October the sun drops just after 8pm; after the clocks go back on 25 October it is closer to 6.30pm, which makes the whole thing an after-work walk rather than an evening expedition.
The west: Torre d'en Rovira and the archipelago view
Between Platges de Comte and Cala Bassa, in the Sant Agustí area, Torre d'en Rovira is an eighteenth-century tower in remarkably good condition. The walk out to it is a low, easy coastal path over flat rock and through sabina pine, and what you get at the end is the best free view of Ibiza's western islets: Sa Conillera with its lighthouse, s'Espartar, s'Illa des Bosc and Ses Bledes, all laid out in a row, with the entrance to Sant Antoni's harbour off to the north.
This is the one to do if you have an hour and a half and want maximum reward for minimal effort. It is also the best of the towers for a swim afterwards — the rocky inlets between Comte and the tower stay clear and quiet well into October, and the water is still holding summer's warmth.
North and east: the quiet ones
Two more towers sit in the north, in Sant Joan de Labritja, both from the eighteenth century and both designed by the military engineer Juan Ballester y Zafra. Torre de Portinatx stands on the spit beside the beach of the same name; Torre des Molar (or Torre de Balansat) looks out over Port de Sant Miquel towards s'Illa des Bosc and s'Illa Murada. These two are the most architecturally interesting of the seven: two storeys with a rooftop terrace, joined by a spiral staircase built into the thickness of the wall. Originally the only door was on the upper floor and you got in by rope — the ground-floor entrance came later, for storing ammunition and tools.
On the east coast near Sant Carles, Torre d'en Valls (also called Torre de Campanitx) sits on Cap Roig, a protected nature area, with the private island of Tagomago filling the horizon. It was knocked down at some point in its history and rebuilt in the 1980s, which purists grumble about, but the approach is lovely — a gentle path through juniper and low Mediterranean scrub, flat enough for children and short enough that nobody complains. Pair it with Cala Boix below for lunch and a swim.
How to walk the seven properly
You cannot link all seven in a single day on foot — they are scattered across four municipalities and the island is bigger than it looks. What works is three outings. Do the southern pair, Ses Portes and Sa Sal Rossa, in one morning. Do Savinar and Rovira together on the west coast, ideally with the swim in between and Savinar saved for last light. Save the north and east — Portinatx, Molar and Valls — for a full day with a car, because that route is genuinely beautiful driving and the towers are the excuse rather than the point.
Bring more water than the distances suggest; there is almost no shade and the sun in October is deceptively strong. Check the wind before you commit to Savinar, because the cliff edge is exposed and a strong ponent makes it unpleasant. And go on a weekday if you can. In autumn you will have most of these towers entirely to yourself, which is the whole reward — standing on a piece of stone that somebody built to watch for danger, on an island that now has none, with four hundred years of view in every direction.
