On the north side of the courtyard (to the left as you enter) a small door leads to the exquisite little Nagina Masjid (Gem Mosque), made entirely of marble. Capped with three domes and approached from a marble-paved courtyard, it was commissioned by Shah Jahan for the ladies of the zenana (harem). At the rear on the right, a small balcony with beautifully carved lattice screens offers a discreet viewpoint from where members of the harem were able to inspect luxury goods – silks, jewellery and brocade – laid out for sale by merchants in the courtyard below, without themselves being seen.
The raised terrace on the far side of the Macchi Bhavan is adorned by two thrones, one black slate, the other white marble. The white one was used by Shah Jahan, the black one by the future emperor Jahangir to watch elephant fights in the eastern enclosure. It now serves, somewhat less gloriously, as a favoured perch for couples posing for photos against the backdrop of the distant Taj.