Why in news?

• Ministry of Culture inaugurated Photo exhibition on Baolis of Delhi on occasion of World Heritage Day.
• Baoli is a reservoir, man-made water tanks in which water can be stored.
• Baoli is commonly used in Gujarat, Rajasthan and parts of North India.
• A typical baoli usually consists of three elements, the well in which the water is collected, the flight of steps to reach the ground water through several stories and interconnected pavilions.
• Generally, Baolis are U – shaped but L – shaped rectangular or octagonal stepwells are also not uncommon.
• Stepwells located in the edge of the habitation like towns or satellite villages are mostly secular structures.