ARCHITECT LANNA 2025: The Event Book documents collaborative architectural events developed by the Association of Siamese Architects under Royal Patronage (Lanna) and art4d. Bringing together four key programs—the Thesis in Architecture Awards, the International Lectures Old City, New World, the Architecture Tour, and the Material Innovation Awards—this e-book captures a wide range of contemporary architectural discourses rooted in Northern Thailand. Spanning over 200 pages, the publication serves as both a comprehensive event record and a long-term reference, presenting emerging ideas, design practices, and material explorations that connect local identity with broader architectural and cultural contexts.