This publication of the Estonian Academy of Arts in Tallinn presents two fundamental texts, translated to Estonian, on the relationship between architecture and energy. The first,‘Thermal Space in Architecture,’ tackles from both a historical and a technical angle the dialectic between construction and combustion, from Vitruvius to Le Corbusier, and is a chapter of Fire and Memory, by Luis Fernández-Galiano, published in Spanish in 1991, then in English in 2000. The second is the entire text of Thermal Delight in Architecture (The MIT Press, 1979), by Lisa Heschong, which tackles aspects having to do with thermal spatiality, such as need, pleasure, affection, and sacredness.