Architectural Building Week, formerly known as Bulgaria Building Week (BBW) in Sofia, is an annual international fair focused on architecture, construction, and real estate development. The event is held in the Bulgarian capital of Sofia and attracts thousands of trade visitors, companies, and experts from all over the world every year. During the fair, leading companies and start-ups present their latest products, technologies, and services in the fields of architecture, construction, interior design, energy efficiency, smart city solutions, and sustainable development. The event provides an excellent opportunity for architects, civil engineers, urban planners, project developers, investors, and other professionals to find out about current trends and developments in the industry, exchange experiences and ideas, and find potential business partners.

Additionally, several specialist conferences and seminars will be held during the fair, dealing with specific topics such as green building, innovative materials and technologies, BIM (Building Information Modelling), and barrier-free building. Architectural Building Week in Sofia is organized by Inter Expo Center, one of the leading exhibition and congress centers in Bulgaria, and is supported by various industry associations, institutions, and media partners.