The design of the Al-Ruwais Mosque is influenced by the architectural vocabularies of the Mamluk period. Architecturally, the mosque utilizes a combination of simple forms; it has a rectangular floor plan layout covered with two consecutive series of catenary structural-vaults that carry octagonal-shaped  pendentives supporting three circular domes. The vaults ensure a natural ventilation of the prayer hall and are so-called Nubian architecture. The three domes are lined along the Qibla wall facing the East orientation, these use externalized stepped drums in the manner of Cairene mamluk monuments. This structure is flanked by a Mamluk-style minaret. It has an octagonal shape that graduates in size to the spire, it ends with a tapering dome and crescent finial. The structural system is based  on the utilization of hollow baked bricks, columns, vaults, domes and load-bearing walls  and columns. The mosque was built with local materials showcasing craftsmanship  and originality.