Section 2(26)(a) in Bhubaneswar Development Authority (Planning and Building Standards) Regulations, 2001
(a)garden, rookery, well and well-structures, rain water harvesting structures, plant nursery, water-pool (if uncovered) platform round a tree, tank, fountain, bench, chabutra with open top and unenclosed on sides by walls boundary wall, swing, and area covered by chaza without any pillars etc touching the ground;