The structure consists of two glass-vaulted arcades intersecting in an octagon covering the street connecting the Konstantinoupoleos Avenue to the neighboring street. The arcade is covered by an arching glass and cast iron roof. The central octagonal space is topped with a glass dome. The arcade consists of two major sections, each more than 100 meters in length (respectively called Galerie de l'empereur / Στοά αυτοκράτορα, meaning Emperor's Gallery, and Galerie de l'impératrice / Στοά αυτοκράτειρας, meaning Empress's Gallery), and a smaller side gallery (Galerie des Princes / Στοά των Πρίγκιπες, meaning Gallery of the Princes). The main sections (Emperor and Empress's Gallery) are separated by a colonnade.