The tradition and style of garden design represented by Persian gardens or Iranian gardens (Persian: باغ ایرانی‎) has influenced the design of gardens from Andalusia to India and beyond. The gardens of the Alhambra show the influence of Persian garden philosophy and style in a Moorish palace scale, from the era of al-Andalus in Spain. Humayun’s Tomb and Taj Mahal have some of the largest Persian gardens in the world, from the era of the Mughal Empire in India.
As the word expresses, such gardens would have been enclosed. The garden’s purpose was, and is, to provide a place for protected relaxation in a variety of manners: spiritual, and leisurely, essentially a paradise on earth. The Common Iranian word for “enclosed space” was *pari-daiza- (Avestan pairi-daēza-), a term that was adopted by Christian mythology to describe the garden of Eden or Paradise on earth.
The garden’s construction may be formal (with an emphasis on structure) or casual (with an emphasis on nature), following several simple design rules. This allows a maximization, in terms of function and emotion, of what may be done in the garden.