By the 1980s, Flavin's work had evolved into more complex installations often described as "barriers" and "corridors" that engaged directly with the architectural environment, manipulating the viewer's movement and perception of space. His focus on site-specificity became more pronounced as he was afforded access to larger and more diverse exhibition spaces. Despite the scale and ambition of these projects, many were ultimately unrealized, including plans for the Munich Olympics, pedestrian tunnels in Amsterdam, and installations at the World Trade Center (The Art Story). One of his most ambitious projects from this period was the large-scale work for the Chinati Foundation in Marfa, Texas, initiated in the early 1980s but not completed until after his death in 1996. This installation encompassed six buildings and featured corridors with barriers of differently colored fluorescent lights, blending the work seamlessly with the surrounding architecture and landscape (Chinati Foundation). Despite facing health challenges due to diabetes, Flavin continued to create significant works throughout the 1980s. His installations often transcended mere visual experiences to engage with the viewer's movement through space, reflecting his interest in creating "situations" rather than static objects. This period also saw the completion of permanent installations across Europe and the United States, further cementing his legacy as a pivotal figure in the use of light as a medium for artistic expression (Wikipedia). Flavin's impact on the art world extends beyond his contributions to minimalism. His innovative use of light not only challenged conventional notions of sculpture and space but also paved the way for future generations of artists working with light and architectural environments. His work is celebrated for its ability to evoke complex visual and emotional responses through the simplicity of fluorescent light, marking him as a key figure in the transition of art towards more ephemeral and experiential forms (The Art Story).