Taj Mahal
The Taj Mahal is not a Mosque, it is a Mausoleum built in memory
of Mumtaz Mahal. For the most beautiful mosque, Istanbul has the
Blue Mosque and the Sultan Suleyman Mosque. Try the Faisal Mosque
in Islamabad. Or Medina, the town of the Prophet Mohamed. There
could be something like 40 around the world for which this
description may apply