Which Roman structure was built using the Opus quadratum technique?

The Pont du Gard is a remarkable Roman aqueduct that exemplifies the use of the Opus quadratum technique, which involves the construction of large, rectangular blocks of stone that fit together with minimal mortar. This method was particularly favored in Roman architecture for its durability and the aesthetic quality it provided.

The Pont du Gard was designed to transport water over a considerable distance and showcases the engineering prowess of the Romans. The use of precisely cut stone blocks not only contributed to the structural integrity of the aqueduct but also allowed for impressive visual lines that underline the significance of Roman public works. This aqueduct stands as a testament to the Romans' ability to manipulate materials for both functionality and monumental effect.

In contrast, structures like Maison Carrée, Temple of Portunus, and Forum of Trajan employed other building techniques or were built in different styles that did not primarily utilize the Opus quadratum method. The Maison Carrée and Temple of Portunus are more representative of later Roman temple design, while the Forum of Trajan included a wider variety of architectural elements and styles, reflecting the complexities of Roman urban planning rather than a strict adherence to the Opus quadratum technique.