This paper develops the concept of architectural economies to explain how Greece’s cultural heritage, urban systems, and financing mechanisms co-produce economic and environmental outcomes. We synthesize literature, policy documents, and Greek case material to map the interactions among heritage preservation, tourism revenues, community engagement, sustainable architecture, smart-city technologies, and governance. Using visual analytics (a force-directed systems map and two heat maps), we show that sustainability functions as the main integrator across domains, while technology and policy act as bridging levers that translate design choices into measurable urban performance. Indicative associations highlight strong co-movement between urban sustainability and tech innovation/policy support, alongside a more modest heritage–tourism link, implying that preservation generates local value most effectively when coupled to clear standards, financing, and participation. We discuss enabling frameworks—national and local planning instruments, PPP pipelines, and community co-management—together with risks of commodification and identity erosion if contractual KPIs omit authenticity and ecological targets. The analysis culminates in a practical agenda: embed heritage goals in citywide sustainability standards, align PPP incentives with conservation and lifecycle maintenance, and institutionalize participatory stewardship to stabilize employment while safeguarding identity. The resulting model positions Greek architectural economies as a pathway from heritage preservation to resilient, low-carbon urban futures.
Χαλλουμής et al. (Mon,) studied this question.