Short answers, pulled from the story.
Sunder Nursery reopened to the public on the 21st of February 2018. The third phase of conservation work concluded in 2018 following a decade-long process involving the Archaeological Survey of India and Central Public Works Department.
Mughal architects constructed the original garden complex known as Azim Bagh during the 16th century along the Grand Trunk Road. Historical records indicate this site sat adjacent to what would later become Humayun's Tomb in Delhi before being abandoned for decades.
The area contains over 280 native tree species making it Delhi's first arboretum. Geographic Information Systems mapped 4,200 individual trees across the grounds for conservation tracking purposes while bird mapping identified 80 different species.
Plans for extensive conservation work were drawn up in 2007 by multiple agencies including the Aga Khan Trust for Culture India. Vice-president of India M Venkaiah Naidu attended the inauguration alongside Aga Khan Development Network leadership when the park reopened on the 21st of February 2018.
Current plans aim to expand the existing 90 acres into India's largest park covering 900 acres total. The Nizamuddin Urban Renewal Project involves public-private partnerships between government authorities and the Aga Khan Trust to integrate surrounding areas while maintaining historical integrity throughout the expanded landscape.