Located within Assumption University, Bangna campus, this building showcases contemporary architecture that blends Western and Eastern civilizations from the 18th and 19th centuries. It features a cross-shaped design reminiscent of grand churches and cathedrals from the 13th to 15th centuries. The entrance façade of the church is adorned with intricately layered Thai-style decorations, complemented by gilded Thai lacquer doors. The arches exhibit Renaissance architectural style, while the interior boasts elegant marble flooring, richly decorated in Renaissance style. High Gothic windows embellished with stained glass filter light into the space, and a golden dome rests above the altar. Additionally, elements of Thai art are seamlessly integrated into various parts of the design, enhancing its unique character.