Architecture, Building and Structure Design Quantum Building by Vasil Velchev Quantum is a building designed to host the forefront in Product Design as well as all important and iconic works created over the years. Simply its a Museum and Exhibition Center. The style is probably Organic-Eclectic, shape can be geometrically described as a combination of overlapping spheres, displaced relatively one to another, forming two asymmetrical corpora with different internal areas and balconies. The connection between them is accomplished by 5 corridors in the form of mini-deformed protuberances.