B73 is a residential building located in one of the central areas in Sofia, Bulgaria. It stands out in the dense urban context with its innovative and impactful look. The building itself achieves a balance between design and functionality that work simultaneously, while having high-end material usage and exceptional quality in execution. Each residential level comprises of just a single apartment. B73 is one of the very few buildings in Bulgaria, that uses solid surface material and thermoforming technology for achieving complex three-dimensional shapes for such scale.