The mosque at the Taj Mahal complex in Agra, India. This red sandstone building, on the western side of the complex, faces the west side of the mausoleum. In the forefront is a howz, meant for ablution. On the eastern side of the complex is the jawab ("answer"), a mirror image of the mosque except for the missing mihrab and different floor pattern; this jawab was mainly intended for architectural balance. Both were constructed in 1643.Photo: Muhammad Mahdi Karim