This article focuses on the architectural elements which were found in the area north of Trajan’s Forum. They belonged to two architectural orders and we can hypothesize their overall measures, based on the known proportions of the lower order of the basilica Ulpia. Some unpublished fragments of the modillon cornice belonging to the colossal order with 50 Roman feet shafts, confirm that there was a pediment. The modillons can be either slightly larger or narrower. The smaller order had projecting entablature and a projecting porch or an edicula. From a stylistic point of view, the capital of the colossal order is similar to the capital of the basilica Ulpia, although it should date from a later time. On the contrary, instead, the entablatures of the two orders present specific features that show their similarity with the Pantheon and other Hadrianic buildings. Unfortunately, these few facts cannot settle the question of what building the colossal order belonged to; however, they deserve to be taken into consideration.
