<p>This article reconstructs Lisbon’s waterscapes during the early modern period through a blue microspatial method that brings into focus a latent hydroaesthetic vision embedded in textual and visual sources. In a city repeatedly reshaped by earthquakes, tsunamis, and rebuilding campaigns, gaps in the archival record become openings to rethink human–water relations. Moving between panoramic and close-up perspectives, the analysis turns to Lisbon’s bluescapes to trace the fluid, porous interactions through which water and urban life were co-constituted. It shows how infrastructures such as tide mills, fountains, and sewer systems structured daily life while mediating unequal engagements with water across social groups, producing hierarchies of race, gender, and power. This hydroaesthetic vision reoriented perception toward the Tagus and the sea, framing water as the medium through which Lisbon’s socioecological life took material and experiential form. Lisbon’s blue history emerges at the intersection of natural and extreme forces, urban transformation, and imperial expansion, offering a methodological model for analyzing cities shaped by environmental volatility and archival fragmentation.</p>