We are excited to announce the Open Call for the International Architecture Biennial of Antalya 4.5 (IABA), centered around the theme In-Between.
IABA is the first and only International Architecture Biennial in Türkiye, initiated and organized by the Chamber of Architects of Türkiye, Antalya Branch. The first edition was held in 2011 under the theme of Intersections, followed by Template in 2013, Thinking the Future in 2015, and Continuity in 2017. According to Biennial’s regular schedule, the 5th edition was originally planned for 2019. However, due to the COVID 19 Pandemic, the event was postponed, and the series was temporarily suspended.

With its 2025 edition, IABA aims to regain its momentum and reestablish continuity. The title 4.5 reflects this transitional moment—marking both a return to the biennial rhythm and a bridge between past and present practices. It symbolizes the shift brought on by the pandemic, which altered daily life on both global and local scales, introducing new habits, redefined routines, and lasting transformations. In this sense, 4.5 refers to a condition of being in between/in betweenness—a space between what was and what is emerging.
IABA has been recognized for its commitment to pushing architectural boundaries and offering a platform for diverse perspectives on contemporary architectural, urban, and social issues. In keeping with this mission, IABA 4.5 seeks to encourage intercultural and interdisciplinary dialogue, support artistic expression, stimulate debate, and enrich the overall biennial experience.
To achieve this, the Biennial will include an Open Call Compilation, in addition to its Main
Exhibition featuring invited architects. The Open Call aims to create a shared platform for
participants wishing to contribute their ideas and works, fostering diversity and representation, and broadening the conversation within the Biennial framework.