A large, complicated underground water network has been discovered in an old neighbourhood of Isfahan, central Iran.
Central Iranian city of Isfahan was selected as the cultural capital of Muslim world in 2006, and the capital of Iranian-Islamic culture and civilization in 2009. With a number of UNESCO World Heritage sites, it receives millions of Iranian and foreign tourists each year.
From Tehran to the country's third oldest mosque is about five hours’ drive. A mosque with a single brick-made minaret and a 700-year-old wood carving marquetry pulpit, all built without the use a single nail.