This paper presents a phase-based analysis of the spatial and architectural development of underground stations in the Warsaw Metro, focusing on 28 non-transfer stations constructed between 1983 and 2019. The research examines how design and functional solutions evolved over five construction phases in response to changing engineering methods, organizational frameworks, and urban contexts. A comparative analytical framework was developed, incorporating quantitative and qualitative parameters related to spatial layout, access schemes, and interior design features. The methodology combines archival documentation analysis, in situ field surveys, and typological classification. Findings reveal a clear trajectory from utilitarian, dual-purpose stations emphasizing structural durability and civil defense, toward more user-oriented designs prioritizing accessibility and intuitive navigation. Later phases show an expansion of multifunctional elements, including retail spaces, reflecting contemporary trends in metro station design. It contributes to a broader understanding of how adaptive design strategies enable metro infrastructure to respond to evolving urban needs and challenges, highlighting the importance of contextual integration for future metro developments.
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