Porto Alegre

Founding and First Mentions

• Founding Date: The settlement emerged in the late 19th century, approximately in 1890.
• Origin: The history of Porto Alegre is inextricably linked to the colonial era and the development of the plantation economy. It was originally a large agricultural estate — Roça Porto Alegre — founded by the Portuguese landowner Jacinto Carneiro de Sousa e Almeida.
• Status: For a long time, the site existed as a private property and a center for cocoa and coffee production before transforming into an independent settlement.

Key Factors of Development

• Geography and Isolation: Its location at the extreme south of São Tomé Island, far from the capital, played a decisive role. Proximity to the equator and a specific microclimate created ideal conditions for growing export crops.
• Agricultural Economy: The economic foundation of the settlement was the "roças" system — self-sufficient plantations that functioned as mini-towns with their own infrastructure, hospitals, and housing for workers.
• Strategic Point: Porto Alegre served as an important hub for the exploration of the island's southern territories and for communication with the nearby Ilhéu das Rolas.

Early Cultural and Economic Features

• Social Structure: Life in early Porto Alegre was built around the plantation hierarchy: European administrators and hired workers ("serviçais") from other colonies (Cape Verde, Angola, Mozambique), which formed a unique cultural blend.
• Influence of the Angolar Community: The region is historically linked to the Angolar people — descendants of survivors from a 16th-century slave ship wreck. Their fishing traditions and secluded way of life influenced the formation of the local identity around the plantation.
• Architectural Heritage: The economic boom of the early 20th century left behind characteristic colonial architecture, elements of which (warehouses, administrative buildings) have survived to this day as evidence of the "cocoa boom" era.

The Plantation Era

• Late 19th Century (c. 1890): Founding of the large agricultural estate (roça) of Porto Alegre by the Carneiro de Sousa e Almeida family of landowners.
• Early 20th Century: A period of active infrastructure construction, including a hospital, aqueduct, and warehouses, against the backdrop of the global cocoa production boom.
• 1915–1918: The geodesic mission of Admiral Gago Coutinho on the neighboring Ilhéu das Rolas, confirming the passage of the equator line, which historically linked the region to geographical discoveries.

Post-Colonial Period and Modernity

• 1975: Following the country's independence, the plantation was nationalized, leading to a change in the management and ownership structure.
• 1991: Commencement of land reform in São Tomé and Príncipe, during which the lands of the former roça began to be distributed among small farmers.
• 2004: The opening of a major resort complex on Ilhéu das Rolas turned Porto Alegre into a key transit point for tourists.
• 2010s: Strengthening of the settlement's role as an ecotourism center due to the development of projects to protect sea turtles on local beaches.
• 2020s: Inclusion of the historical roça buildings in cultural heritage routes to preserve the colonial architecture of the island's south.

Key Milestones of Development and Transformation

The history of Porto Alegre is a journey from a closed colonial plantation to an important tourist and ecological center in southern São Tomé. Below are the key stages that have shaped the modern face of the settlement.

• Founding of the Agro-Industrial Complex (Late 19th Century).
  Significance: The establishment of the "Roça Porto Alegre" estate formed the urban core of the settlement. A clear layout was created with an administrative center, production workshops for cocoa processing, and residential zones.
• Construction of Autonomous Infrastructure (Early 20th Century).
  Significance: The construction of a hospital, aqueduct, warehouses, and workers' quarters (sanzalas) turned the private estate into a self-sufficient "city within a city," capable of supporting the lives of hundreds of people in isolation from the capital.
• Geographical Recognition of the Region (1915–1918).
  Significance: The work of Gago Coutinho's geodesic mission and the confirmation of the equator passing through the nearby Ilhéu das Rolas established the area as an important geographical point, which later became the basis for the tourism brand.
• Nationalization of the Plantation (1975).
  Significance: The transition of infrastructure to the control of the independent state changed the social structure. Former hired workers gained the rights of citizens, although the centralized economic model began to decline.
• Land Reform and Decentralization (1990s).
  Significance: The division of the former plantation lands among small farmers transformed the settlement's economy. Residents moved from hired labor to private farming and fishing.
• Integration into International Tourism (2004).
  Significance: The opening of a large resort complex on Ilhéu das Rolas made Porto Alegre a key transport hub. This stimulated the development of boat transfers, small businesses, and the service sector.
• Ecological Reorientation (Present Day).
  Significance: The launch of projects to protect sea turtles and preserve biodiversity created a new cultural code for the location. Porto Alegre became known not only as a historical site but also as a center for ecotourism.

Urban Structure: The “Roça” Model

Porto Alegre is a classic example of urban planning shaped by the needs of plantation agriculture. Unlike traditional cities that grew around markets or fortresses, this settlement developed as an autonomous production complex (roça). The urban core is organized hierarchically:

• The Center (Terreiro): A vast paved square that served as a place for drying cocoa and coffee, around which the main buildings were clustered.
• Administrative Zone: The manager's house and administrative offices are located on high ground or at the end of the square, symbolizing control over the territory.
• Production Sector: Warehouses, drying sheds, and workshops adjacent to the central square to optimize logistics.
• Residential Zone (Sanzalas): Barracks for workers, built linearly or in blocks on the periphery of the complex.

Architectural Eras and Styles

The architectural appearance of Porto Alegre was almost entirely formed during the "cocoa boom" and has been preserved in time. The main styles reflect pragmatism and the adaptation of European traditions to the tropics.

Colonial Style and Tropical Adaptation (Late 19th — Early 20th Century)

This is the primary layer of construction that defines the face of the settlement. The buildings were erected by Portuguese engineers with the humid equatorial climate in mind.

• Key Features: The use of high stilts to protect against dampness and pests, wide verandas around the perimeter of buildings for ventilation and shade, and high ceilings.
• Materials: A combination of local wood, stone, and imported tiles.
• Iconic Sites: The Main House (Casa Principal) — the owners' residence, demonstrating elements of a European manor style adapted for the tropics.

Industrial Architecture (Early 20th Century)

The era of agricultural mechanization brought elements of industrial style to Porto Alegre's appearance.

• Key Features: Functionalism, the use of massive stonework, and metal structures. The buildings are devoid of decoration, their form dictated by the production process.
• Iconic Sites: Cocoa warehouses and drying sheds, as well as a system of aqueducts that provided the plantation with water.

Post-Colonial Vernacular Architecture (Since 1975)

After independence and the nationalization of the plantations, the development of monumental architecture stopped. A period of adapting the old stock to the needs of the local population began.

• Features: Former warehouses and administrative buildings were converted into housing. New construction consists of simple one-story houses made of available materials (wood, concrete blocks), often haphazardly arranged around the historical core.

Iconic Buildings and Sites

Despite their dilapidation, several structures remain the dominant landmarks of the settlement:

• The Old Hospital: A once-majestic building demonstrating the administration's concern for maintaining the workforce (an important aspect of large plantations at the time). It is now in a ruined state but retains traces of its former monumentality.
• The Chapel: The religious center of the community, built in a restrained style characteristic of Portuguese rural architecture.
• Alleys: Remnants of landscape design with palm-lined alleys that marked the entrances to the estate and emphasized its status.

Founders and Owners

• Jacinto Carneiro de Sousa e Almeida
  Role: Major landowner and founder of the estate.
  Significance: In the late 19th century, he laid the foundation of the settlement by creating "Roça Porto Alegre." His entrepreneurial activity turned the wild lands of the island's south into a flourishing enterprise, around which the infrastructure and population of the modern village formed.
• João Maria de Sousa e Almeida
  Role: Aristocrat (1st Baron of Água-Izé) and pioneer of the cocoa industry.
  Significance: The patriarch of the family that developed plantations in southern São Tomé. Although based at a different estate, his influence and capital were the driving force for his descendants to develop the southern territories, including the Porto Alegre area.

Explorers and Scientists

• Carlos Gago Coutinho
  Role: Portuguese admiral, geographer, cartographer, and aviation pioneer.
  Significance: Leader of the 1915–1918 geodesic mission. He used Porto Alegre as a base for his work on the nearby Ilhéu das Rolas, where he scientifically proved the passage of the equator line. Thanks to his work, the region gained status as an important geographical landmark.

Cultural and Historical Symbols

• Rei Amador (King Amador)
  Role: Leader of a slave revolt (16th century) and national hero ("King of the Angolars").
  Significance: Although he lived long before the village was founded, Amador is a symbolic figure for the residents of Porto Alegre. Most of the local population are Angolars, descendants of his followers who historically took refuge in the south of the island. His image is inextricably linked with the region's cultural identity.
• Francisco José Tenreiro
  Role: Geographer, sociologist, and poet.
  Significance: Author of fundamental works on the social structure of São Tomé. In his writings, he described in detail the daily life and organization of the plantations (roças), including Porto Alegre, recording for history the unique way of life of the "serviçais" (contract workers) and Angolars in this region.