From 1981 to 2026, across sixteen editions, INTERARCH has established Sofia as a global meeting place for architectural ideas, innovation, and dialogue.

Founded in 1981 in Sofia, Bulgaria, as the World Architecture Biennale, INTERARCH is one of Europe’s longest-standing international architectural forums and the most distinguished event of its kind in Southeastern Europe. Over more than four decades, the forum has evolved into an Architecture Triennale, bringing together leading architects, urban planners, educators, students, and cultural institutions from around the world.

Through professional exchange, critical reflection, creative exploration, and international collaboration, INTERARCH has created a lasting platform for discussing architecture’s role in shaping cities, communities, cultures, and the future of the built environment.

Join us in October 2026 for the sixteenth edition of INTERARCH in Sofia.