Isfahan is located on the main north-south and east-west routes crossing Iran, and was once one of the largest cities in the world. It flourished from 1050 to 1722, particularly in the 16th century under the Safavid dynasty, when it became the capital of Persia for the second time in its history. Even today, the city retains much of its past glory. It is famous for its Islamic architecture, with many beautiful boulevards, covered bridges, palaces, mosques, and minarets. This led to the Persian proverb "Esfahān nesf-e jahān ast" (Isfahan is half of the world)
The Maidan was where the Shah and the people met. Built as a two story row of shops, flanked by impressive architecture, and eventually leading up to the northern end, where the Imperial Bazaar was situated, the square was a busy arena of entertainment and business, exchanged between people from all corners of the world.
On one corner of this architecture, there still remains two sites of ancient well which was closed with huge stone several hundred years ago. I covered this site with aluminum plates and slapped until the shape of the surface appears.