Charbagh or Chahar Bagh (Persian: چھار باغ chahār bāgh, Hindi: चारबाग़ chārbāgh, Urdu: چار باغ chār bāgh, meaning "four gardens") is a Persian and Indo-Persian quadrilateral garden layout based on the four gardens of Paradise mentioned in the Quran. The quadrilateral garden is divided by walkways or flowing water into four smaller parts. They are found in countries throughout Western Asia and South Asia, including Iran and India.
Persian garden concept of chahar bagh
The quadrilateral Charbagh concept is interpreted as the four gardens of Paradise mentioned in Chapter (Surah) 55, Ar-Rahman "The Beneficient", in the Qur'an:
And for him, who fears to stand before his Lord, are two gardens. (Chapter 55: Verse 46)
And beside them are two other gardens. (Chapter 55: Verse 62)
One of the hallmarks of Charbagh garden is the four-part garden laid out with axial paths that intersect at the garden's centre. This highly structured geometrical scheme, called the chahar bagh, became a powerful method for the organization and domestication of the landscape, itself a symbol of political territory.
The concept of chahar bagh is not only mentioned in Qur'an but it has been mentioned in (Genesis 2: 8-10) , the idea of the world divided into four parts. 
Famous Charbagh gardens
The Chahrbagh-e Abbasi (or Charbagh Avenue) in Isfahan, Iran, built by Shah Abbas the Great in 1596, and the garden of the Taj Mahal in India are the most famous examples of this style. In the Charbagh at the Taj Mahal, each of the four parts contains sixteen flower beds.
In India, the Char Bagh concept in imperial mausoleums is seen in Humayun's Tomb in Delhi in a monumental scale. Humayan's father was the Central Asian Conqueror Babur who succeeded in laying the basis for the Mughal dynasty in the Indian Subcontinent and became the first Mughal emperor. The tradition of paradise garden brought to India by the Mughals, originally from Central Asia, which is found at Babur's tomb, Bagh-e Babur, in Kabul.
This tradition gave birth to the Mughal gardens design and displayed its high form in the Taj Mahal — built by Mughal emperor Shah Jahan, the great, great, grandson of the Central Asian Conqueror Babur, as a tomb for his favourite Indian wife Mumtaz Mahal, in Agra, India. Unlike most such tombs, the mausoleum is not in the centre of the garden, however archaeological excavations have revealed another garden opposite indicating that historically the mausoleum was centered as in tomb garden tradition.
- Cornell, Vincent J. (2007) Voices of Islam: Voices of art, beauty, and science (volume 4 in the Voices of Islam series) Praeger, Westport, Connecticut, pages 94-95, ISBN 978-0-275-98735-0
- Begde, Prabhakar V. (1978). Ancient and Mediaeval Town-planning in India. Sagar Publications. p. 173.
- D. Fairchild Ruggles, Islamic Gardens and Landscapes, University of Pennsylvania Press, 2008, p.39
- "Bible Gateway passage: Genesis 2:8-10 - New International Version". Bible Gateway. Retrieved 2021-08-03.
- Mughul Tomb GardensThe poetics of gardens, by Charles Willard Moore, William J. Mitchell. Published by MIT Press, 2000. ISBN 0-262-63153-9. Page 17.
- "Ep. 2". Monty Don's Paradise Gardens. BBC.
- A Place in Paradise - radio coverage from the BBC about the charbagh garden on top of the Ismaili Centre in South Kensington
- Lehrman, Jonas Benzion (1980). Earthly paradise: garden and courtyard in Islam. University of California Press. ISBN 0-520-04363-4.
- Ruggles, D. Fairchild (2008). Islamic Gardens and Landscapes. University of Pennsylvania Press. ISBN 0-8122-4025-1.
- Babur's Garden - video from the Asia Society, US