The Architectural League Prize is an annual event involving a competition, a series of lectures, an exhibition, and a publication, organised by the Architectural League of New York and its Young Architects and Designers Committee. The 2015 competition theme, 'Authenticity', investigated recent advances in computation, visualisation, material intelligence, and fabrication technologies, exploring how these advances have begun to alter the understanding of general design principles as well as the architect's role and practical approach toward architecture and research. Projects by the six winners address new positions of authenticity in architecture through form, design, substance, function, context, and other means that direct and transform their practices. The winners are: Dan Adams and Marie Adams, Landing Studio, Somerville, MA; Anna Neimark and Andrew Atwood, First Office, Los Angeles; Erin Besler, Besler & Sons, Los Angeles; Seth McDowell and Rychiee Espinosa, mcdowellespinosa, Scottsville, VA, and Brooklyn; Thom Moran, Ann Arbor, MI; and Clark Thenhaus, Endemic, Ann Arbor, MI.