She is noted for her body of work spanning from drawing to video art, including installation, objects, and photography.
Her internationally acclaimed work has received prizes such as The Pollock-Krasner Foundation Award and residencies like Couvent des Recollets, in Paris and Fonderie Darling, in Montreal.
The use of natural and artificial flowers, texts, sounds and materials like hair and chewing gum were part of her first works.
In 2004, Léon conducted a large-scale outdoor installation in Montréal, entitled "Esperanza (Out of Season)", in which she adhered fake branches and leaves to the trees in a public park - a work that only became visible with the passing of the season, as the trees' leaves slowly and naturally dropped away, revealing the imitation branches in stark contrast.
[10] Every Sound Is a Shape of Time, a collections-based exhibition at the Pérez Art Museum Miami in 2024, curated by Franklin Sirmans, borrowed its title from an artwork by León, who exhibited alongside seventeen other modern and contemporary artists and their artworks collected for over three decades, from the museum founding to the present.