- Sulaco city is a fictional town that appears in Joseph Conrad's novel "Nostromo." It is located in the fictional country of Costaguana in South America. Sulaco serves as the main setting for the story, and its portrayal reflects the political and social turmoil of the region during the late 19th century. The city represents a hub of international trade and colonial influence, with various factions vying for power and control. Sulaco city provides a rich backdrop for the novel's exploration of themes such as corruption, imperialism, and the impact of foreign intervention on local societies.