Taj Mahal polished to emphasise the exquisite detailing of the carvings. The dado frames and archway spandrels have been decorated with pietra dura inlays of highly stylised, almost geometric vines, flowers and fruits. The inlay stones are of yellow marble, jasper and jade, polished and levelled to the surface of the walls. The interior chamber of the Taj Mahal reaches far beyond traditional decorative elements. The inlay work is not pietra dura, but a lapidary of precious and semiprecious gemstones. The inner chamber is an octagon with the design allowing for entry from each face, although only the door facing the garden
Taj Mahal stated there was no evidence to suggest the monument ever housed a temple. A theory that the Taj Mahal was designed by an Italian, Geronimo Vereneo, held sway for a brief period after it was first promoted by Henry George Keene in 1879 who went by a translation of a Spanish work "Itinerario", ("The Travels of Fray Sebastian Manrique, 1629-1643"). Another theory that a Frenchman, Austin of Bordeaux designed the Taj was promoted by William Henry Sleeman based on the work of Jean-Baptiste Tavernier. These idea were revived by Father Hosten and discussed again by E.B. Havell and served as