The goal of the 2014 excavations by the Advanced Program of Ancient History and Art (APAHA) was to reach a better understanding of the architectural development of the Villa San Marco. To that end, two trenches were excavated in areas of particular interest in that respect. The first was located in a small, enclosed garden (viridarium). It is located close to the atrium, hypothesized to be the Villa’s original core. It is also one of only a handful of rooms where two different architectural alignments meet (that of the Villa’s main part and that of its bathing complex) and where it is possible to excavate without removing mosaic flooring. In the adjacent architecture, signs of restructuring are visible, suggesting alterations to the arrangement of rooms. Those alterations notwithstanding, the results of the excavations showed that little rebuilding had occurred in this part of the Villa. The second trench was located just north of the threshold of the Villa’s tablinum. This area is interesting archaeologically because the threshold connects two sections of the Villa that have a different socioeconomic character: an undecorated working sector to the north and a beautified domestic sector to the south. Here as well the trench promised to be rewarding for investigations into architectural development. Together with the atrium, the tablinum is thought to have belonged to the Villa’s original construction. A surprise in this trench was the discovery of a wide and deep wall, either the outside face of a large cistern or the foundation for a demolished loadbearing wall.