Felix Gonzalez-Torres's Stack works are a significant part of his oeuvre, embodying his conceptual approach to art that merges personal and political themes with minimalistic aesthetics. These works typically consist of piles of printed paper or posters that viewers are encouraged to take from, engaging directly with the art in a way that is both physical and symbolic. The stacks can vary greatly in content, from textual to purely visual elements, and are known for their endless supply, as the stacks are intended to be replenished, thus never diminishing.

A hallmark of Gonzalez-Torres's Stack works is their transformative nature, not just in the physical sense but also in how they invite viewers to become active participants in the work. This participatory aspect is crucial, emphasizing the artist's belief in the democratization of art and its accessibility. By taking a piece of the artwork home, the audience engages in a personal and collective act of memory, loss, and continuation. The concept of endlessness in these works directly confronts themes of mortality and perpetuity, reflecting Gonzalez-Torres's own experiences and broader social issues.

Each Stack work, while conceptual and minimal, is deeply personal and invites varied interpretations. The titles, often "Untitled" followed by a parenthetical that hints at deeper meanings, suggest a direct link to Gonzalez-Torres's life, relationships, and reflections on social issues, such as the AIDS crisis. The titles and the content of the prints themselves often suggest a narrative or a commemoration, engaging with the viewer on both intellectual and emotional levels.

Gonzalez-Torres's Stack works are not just about the physical interaction with the art but also about the implications of that interaction—taking a piece of the work changes it, just as our encounters with art and with each other change us. These works challenge traditional notions of art as a static, untouchable object and instead present it as something alive, mutable, and communal.

In essence, Felix Gonzalez-Torres's Stack works offer a powerful commentary on the nature of art, existence, and the role of the viewer, blurring the lines between the art object and the audience in profound and meaningful ways​ (Felix Gonzalez-Torres Foundation)​​ (The Art Story)​.