The invention is a promotional structure, such as a greeting card, which is collapsible to fit into a flat envelope for mailing, and which unfolds into the shape of a recognizable type of building, such as a house. Some of the panels are flexibly joined to one another while others (or portions of others) carry reusable fasteners, such as ribbons corresponding to complementary holes on adjacent panels. When the structure is unfolded and the fasteners join the corresponding panels, the panels define the building's shape and its promotional theme. The design provides a structure well suited for distributing promotional material in a medium that is different than traditional greeting cards or brochures, and the structure may be fabricated either from a plurality of panels secured to each other or from the die-cutting and scoring of a single sheet of material.