To the north of Chieti is the octagonal church of S.
Close to this stands the so-called tomb of Sitte Zobeide (Zobaida), with its octagonal base and pineapple dome, one of the most conspicuous and curious objects in the neighbourhood of Bagdad.
Directly under the altar is situated the pantheon or royal mausoleum, a richly decorated octagonal chamber with upwards of twenty niches, occupied by black marble urnas or sarcophagi, kept sacred for the dust of kings or mothers of kings.
Conspicuous among the art treasures of the interior is the well-known octagonal pulpit by Niccola Pisano, dating from 1266-1268.
It is square below, with an octagonal summit of a slightly later period.