The structure of the bazaar represents a glimpse into the Persian architectural style. Some of the trade has moved to the northern parts of Tehran but this bazaar still holds an edge due to its history and prestige. This is a popular hotspot for the locals to do their shopping on daily basis. A guy selling packed Irish Cream, I looked at the package and it was made in Dublin (my hometown).
The Khomeini Mosque sits in the Grand Bazaar. The mosque was closed at the time of my visit (probably, it only opens during the prayer time). After many centuries, the grand bazaar is still an important place of commerce for Tehranis, Iranians and travelling merchants.