This article addresses a notable gap in the scholarship on rural settlement in northeastern Noricum (today’s Lower Austria/AUT), an area often overlooked despite its extensive archaeological sources. Employing underutilized data, the study scrutinizes settlement patterns in the Danube limes hinterland from the mid-1st to the late 5th c. CE. It identifies key centers – Arelape, Favianis, Augustianis, and Cetium – as essential nodes of functional regions in a diverse landscape of “integrated Roman rural complexes.” However, there was a shift from diversity to more centralized settlement in Late Antiquity, signaling the extensive decline of rural structures. The article examines several factors contributing to this decrease within a “system of ups and downs,” including demographic changes, geopolitical crises, and climatic fluctuations. Crucially, it situates these developments within a broader systemic framework, positing a multi-causal, long-term decline. The study’s findings provide vital insights into volatile societal changes and their implications for current global crises.