Here’s a thorough, sourced history and construction description of Torre (de) Los Ladrones
the tall coastal watchtower at the Artola / Cabopino dunes (Marbella), province of Málaga.📍 Short ID & location
Name: Torre Ladrones (often written Torre de los Ladrones — “Thieves’ Tower”).
Location: Artola (dunes) next to Puerto de Cabopino, municipality of Marbella, Malaga province (coords 36.485417, -4.743297).

Overview — function & historical role
Torre Ladrones is a coastal watchtower (torre almenara) that formed part of the medieval and early-modern line of vigilance towers along the Andalusian Mediterranean coast, whose role was to spot hostile ships (raiders/pirates) and signal inland settlements and other towers. Its position on a dune ridge gave long visual reach along the coast.

Date / cultural origin
Most secondary sources attribute the tower’s original construction to the period of Muslim (al-Andalus / Nasrid) domination of the peninsula — i.e., medieval Islamic-era origin — on the basis of building materials and typology. Some official descriptions note phases of reconstruction in later centuries. A minority of references briefly suggest older (Roman) elements may be present in reused material, but the accepted reading in the architectural literature is of a medieval (Muslim-era) watchtower later adapted within the coastal defence system.

Protection status
Torre Ladrones is protected as a cultural asset (declared Bien de Interés Cultural in national/regional inventories) and is a listed monument in provincial heritage documentation; it is one of the best-preserved and most visited watchtowers on the Málaga coast.

Physical description & construction details
Plan & shape: square-prism tower with a slightly battering (wider) base; rises vertically to a terrace/terrado. The tower’s form is characteristic of defensive coastal towers in Andalusia.
Height: commonly reported around 14–15 metres, making it the tallest surviving coastal watchtower in the province.
Substructure / base: the lower section shows a wider, sloping socle (base) that improves stability in the dune sands and resists wave and wind action — a common practical feature where towers were built on soft coastal ground.
Materials: mixed masonry — brick and stone (local masonry and re-used materials), visible stretcher bond brickwork in exterior faces and rougher stone rubble in the plinth and fills; mortar joints and repairs indicate multiple building phases. The brick exterior is one reason many scholars link the visible fabric to medieval/late-medieval construction and later repairs.
Interior layout: interior traditionally divided over three rooms plus the roof terrace (ground floor, intermediate chamber(s) and an upper chamber opening to the terrado), reached historically by wooden ladders or internal stairs; small slit-windows and embrasures face seaward for observation. Visitors today cannot generally enter, but photographic and archival descriptions record the three-room layout.
Openings & defensive features: narrow observation slits and small window-openings; historical descriptions mention machicolation-type features (matacanes/“ladroneras” — defensive overhangs or loopholes) and the tower’s name has been linked in explanation to these roof or parapet features (see below).

Name — why “Ladrones” (Thieves)?
The toponym “Ladrones” is explained in local descriptions in two ways (both appear in the literature): 1) as a folk/legendary reference (stories of smugglers or thieves associated with the area), and 2) as a technical/architectural explanation — the tower’s parapet had defensive features (referred to in Spanish sources as matacanes or ladroneras) and the name may be derived from that feature rather than from criminals. Scholarly inventories often prefer the architectural/functional explanation while tourist accounts lean into the legend.

Chronology — later use, adaptations & maintenance
Medieval origin → Early modern adaptation: After its medieval (Muslim-era) construction the tower was incorporated into the wider coastal vigilance network during the late medieval and early modern periods (including the 16th–18th centuries), especially as the threat from Barbary pirates and corsairs became chronic. Towers were used to fire alarms (smoke by day, fire by night) and to mobilize local militias or garrisons.
Conservation & modern era: The tower survived the centuries in good enough condition to be documented in 18th–20th century provincial inventories and photographs; it is now conserved and presented as part of the natural-heritage site of the Artola dunes. Recent conservation and site-management works have focused on protecting the dune ecosystem and providing boardwalk access for visitors while preserving the tower’s fabric.

Significance
Torre Ladrones is notable for being the tallest surviving coastal watchtower in the Málaga province, for its relatively good preservation, and for its location within the sensitive dune landscape of Artola/Cabopino (both natural and cultural heritage value). It illustrates coastal defensive architecture and the reuse/adaptation of towers from medieval Muslim origins into later Christian-period coastal defence networks.

Sources & further reading
Spanish Wikipedia entry — *Torre Ladrones*.
Málaga Provincial heritage page — *Torre Ladrones (Thieves Tower)* (official inventory/description).
Marbella municipal culture/patrimony page — short history and description.
Archival/photo holdings (Andalusian archives / Google Arts & Culture photographic item).
Detailed photographic documentation

Measured dimensions & layout (published figures)
Plan (footprint): square plan with a side of 3.65 m.
Height (total): reported values in official/local sources range between 14.6 m and ≈16 m; the most frequently quoted measured figure is 14.60 m (some tourist/guide sources round this to 15 m or list 16 m). I list 14.60 m as the measured figure used in the municipal/provincial fiche.
Floors / internal divisions: three rooms + terrace (terrado) (ground floor, intermediate chamber(s), upper chamber and roof terrace).
Form / profile: trunk-pyramidal / prism with slight batter (wider at the base, tapering upward). Exterior shows brick/stone masonry.
Short note on small numeric differences: different inventories and guidebooks round/approximate the height (14.6 m → often quoted as 15 m or 16 m). I used the figure given in the municipal/provincial inventory as the primary measured value.

Construction materials & technical details (from heritage descriptions)
Materials: mixed masonry — brick and stone (brick façades with stone rubble plinth and fills); traditional lime mortar. The visible brickwork is one reason specialists link the visible fabric to medieval (Nasrid) construction phases.
Defensive features: narrow observation slits and small embrasures; the tower name (“Ladrones”) is associated in the literature both with local toponymy/legends and with architectural parapet features historically called ladroneras/matacanes.
Foundations/site: built on a dune ridge (Artola) with a revellín / reinforced base to improve stability on sandy ground. The sloping socle and revellín are recorded in technical descriptions.

Heritage status & conservation reports — summary
Protected status: Declared Bien de Interés Cultural (BIC) and included in the provincial/municipal heritage cataloguing (official delimitation recorded in the Junta de Andalucía decree).
Reported condition: municipal/provincial fiche and planning documents list the tower’s state as good / restored (the municipal heritage page states “Estado: Bueno, restaurada”). Conservation works and maintenance are repeatedly referenced in the Puerto Cabopino / Artola project documents and in the municipal PGOU/heritage syntheses.
Conservation / restoration actions: the tower features in local planning and conservation paperwork (Marbella project/PGOU, the “Proyecto Básico Puerto Cabopino” and provincial inventories) and is part of the set of coastal towers identified for conservation measures in provincial/national coastal-protection programmes. The national coastal authority ran a larger program of restoration works for historic watchtowers in Malaga province (projects executed ~2008–2010 for a group of towers); the provincial/municipal documentation for Cabopino references conservation requirements and protective planning around Torre Ladrones. Exact technical reports (measured drawings, intervention memórias) are held in the municipal/provincial project files and the project PDFs referenced below.

Where the numeric / technical data come from (key sources)
Municipal / provincial heritage fiche (Ayuntamiento de Málaga / Provincia): plan side 3.65 m, height 14.60 m, layout, and “restaurada / buen estado”.
Proyecto Básico Puerto Cabopino (Junta de Andalucía) — planning file: report sections describe the tower’s state and visual lines, and include cultural-heritage consultation notes (mentions that actions are outside the BIC limits and reference conservation constraints).
Junta de Andalucía — BOJA decree / BIC delimitation (Decreto 250/2003): official legal protection and geographic delimitation of the BIC area.
Academic / guide literature & museums / photo archives: general construction interpretation (Nasrid origin, brick + stone masonry, three rooms + terrace) appears in inventories, guidebooks and photographic archives (Wikipedia, Provincia, VisitCostaDelSol, Google Arts & Culture, etc.).

Gaps / where measured technical reports live
Measured drawings, full conservation-intervention memórias, stratigraphic reports and detailed wall-section drawings are not fully reproduced in open brief web pages — they typically appear in:
1. the full “Proyecto Básico / Proyecto de Restauración” PDFs held by the Junta de Andalucía or the Marbella Town Hall (these often include measured plans and memórias técnicas); and
2. the provincial heritage archive (Inventario artístico / MECD / Diputación)** and the municipal PGOU catalogues. I found the planning/project PDFs (e.g., the Cabopino basic project) and the heritage inventory entries (links above) which reference such technical files; however a direct downloadable intervention report specifically titled “Intervención Torre Ladrones — memoria técnica” was not openly available in the top-level search results.
