Vigas and latillas are traditional building materials used in Southwestern architecture, particularly in Pueblo, Territorial, and Spanish Colonial styles. Vigas are large, wooden beams that are typically placed horizontally across the ceilings of structures to support the roof, while latillas are smaller, lighter sticks that are often laid perpendicular to the vigas to create a framework for the ceiling. Together, they not only provide structural support but also contribute to the unique aesthetic of New Mexico's architectural heritage.