What decorative feature was frequently used as a portal in Romanesque architecture?

Sculptural reliefs were a significant decorative feature in Romanesque architecture, specifically used to enhance the appearance of portals, which are the grand entrances to churches and cathedrals. During the Romanesque period, which thrived roughly from the 10th to the 12th centuries, sculptural reliefs served not only as ornamental elements but also as narrative devices. They often depicted Biblical stories, saints, and allegorical figures, effectively communicating religious themes to a largely illiterate populace. This use of sculptural reliefs made the portals not only functional but also a canvas for storytelling and artistic expression, creating a profound visual impact as individuals entered these sacred spaces.

Other decorative features, such as ornate frescoes and naturalistic paintings, were more common in the interiors of buildings rather than on the exterior portals. Abstract motifs, while present in some Romanesque designs, did not carry the same narrative weight or significance as the sculptural reliefs adorning the portals. Thus, the choice of sculptural reliefs is correct, as it encapsulates both the artistic and communicative purposes that defined Romanesque architecture.