|The mihrab, or niche in the wall
that points the direction to Mecca,
was left intact.
|Skylights let in abundant natural light. The hall
contains 856 columns built of jasper, onyx,
marble and granite. The colors still glow,
after thousands of years!
|Parts of the hall were made from
Roman ruins previously on the
site. The double arches were a
new introduction to architecture,
permitting higher ceilings with