"Chehel Sotoun Garden," with over 67 thousand square meters, was constructed during the reign of Shah Abbas I by making a building within the garden.

Later, during the reign of Shah Abbas II, significant alterations were made to the existing structure, adding features like the Hall of Mirrors, the Eighteen-Column Hall, a large pool in front of the building, and several other sections. Also, all the decorative elements of painting, mirror work, and tiling were added to it.

This way, the Chehel Sotoun Palace was transformed into the official palace of Shah Abbas II.

The name "Chehel Sotoun" is believed to be attributed to the twenty columns of the palace and their reflection in the front pool, which makes the total number of columns forty.

The name is also believed to be attributed to the abundance of the columns in the palace; the number "forty" symbolizes 'abundance' in Iranian culture.

Among the notable parts of the Chehel Sotoun Palace are its magnificent mirrored ceiling in the Hall of Mirrors, superb golden artwork in the Royal Hall, and large paintings of the Safavid kings.