Indian building style that flourished under the patronage of the Mughal emperor Shāh Jahān (reigned 1628–58); its crowning achievement is the magnificent mausoleum at Āgra, the Tāj Mahal (Taj Mahal) (q.v.). Among the other landmarks of the style are several mosques at the emperor's first capital, Āgra, and another great mosque and a huge fortress-palace complex at his second capital, Delhi. The use of the double dome, the recessed archway inside a rectangular fronton, and parklike surroundings were all favourite devices of Shāh Jahān period builders. Symmetry and balance between the parts of a building were always stressed, as was delicate ornamental detail. White marble was a favoured building material. See Mughal architecture.