Light wells such as this can often be seen in various sections in the Kashan Bazaar.
Bazaar of Kashan (Persian: بازار کاشان Bāzār-e Kāshān) is an old bazaar in the center of the city of Kashan, Iran. It is thought to have been built in the Seljuk era with renovations during the Safavid period.
The bazaar has a famous architecture, especially at its Timche-ye Amin od-Dowleh section, where a grand light well was built in the 19th century. The bazaar is still in use and is a few miles in total length. In the bazaar's complex beside the main bazaars, there are several mosques, tombs, caravanserais, arcades, baths, and water reservoirs that each were constructed in a different period.