A groin vault is an architectural feature formed by the intersection of two barrel vaults at right angles. This design creates a series of arches that distribute weight more evenly, allowing for larger and more open spaces in buildings. Groin vaults are commonly found in Roman and Gothic architecture, showcasing their structural efficiency. The use of groin vaults can be seen in various historical structures, such as cathedrals and basilicas. They not only provide strength and stability but also enhance the aesthetic appeal of interiors, allowing for intricate designs and decorative elements to be incorporated into the ceilings.