Since time immemorial, Delhi has been both the capital city of the Indian subcontinent and also a "Garden City". Rulers and administrators have vied with each other to create exquisite gardens in this city-beautiful. Massive afforested areas exist within Delhi; these are the natural lungs of the city that counter pollution and environmental degradation. The beautiful alcoves of manicured lawns and landscaped gardens surround monuments to preserve their old grandeur. The Delhi greens are a veritable paradise for morning walkers and natures lovers. These are ideal picnic spots for the citizens, complete with facilities like boating and playgrounds, even as the visitors breath in Delhi 's historic splendor along with the fresh air.

Delhi Ridge, a densely forested region within the Union Territory of Delhi is the lung of Delhi . The ridge comprises the tail end of the Aravallis. Thick thorn scrubs and patches of woodland characterize this jagged area. It is located towards the southern region of the city and heads northwest towards the west bank of Yamuna. The region is divided into four distinct zones. About 6,200 hectares of the Southern Ridge, which extends beyond the city limits, towards Haryana includes 1,900 hectare of the recently notified Asola Wildlife Sanctuary. The south central Ridge 626 hectare in extent, includes the Kishangarh forest or Sanjay Van, one of the best preserved patches of forest in Delhi . Central Ridge lies within the heart of the city and is approximately 869 hectares. The smallest section, the 87 hectare northern Ridge lies like an emerald scimitar between Civil Lines and the University Campus in north Delhi

Garden of Five Senses, the twenty-acre site, located at Said-Ul-Azaib village, close to the Mehrauli heritage area in New Delhi , is spectacular. The Garden was inaugurated in February 2003. Majestic rocks stand silhouetted against the sky, others lie strewn upon the ground in a casual yet alluring display of nature's sculptural genius. It was the ideal ground on which to realize the concept of a public leisure space that would awaken a sensory response and thereby a sensitivity to the environment.

The Mughal Garden is located in the premises of the President house. This garden is open to public only during the spring season in February and March, when the garden is in full bloom. This garden has some exotic and rare flower plants. The dwarf orange trees and numerous rose plants are special attraction of the garden. The fountains add to the beauty of the place. Recently the President Estate has established a special Herbal Garden with rare and exotic collection.

Nehru Park, This Park stretches over 75 acres of land, its beautifully manicured lawns are landscaped with rocks Monkey Bridge, Jogging/walking tracks, fountains, water channel, a swimming pool, a baoli and Nehru's quotes inscribed on rocks. The civic body organizes Classical Music Concert of Morning Ragas once in a month in this park. An Artists Corner known as "Srijan" has been established where senior artists as well as budding artists creating their art works and display these in an open art gallery.

Lodhi Garden a djoining the India International Center has the tombs of Sayid and Lodhi rulers. Spread over 100 acres, the garden has beautiful trees, lawns, flowering shrubs, fountains, lakes, a baoli, a rose garden, a bonsai garden, a glass house and jogging/walking tracks. The Tombs of the rulers are in architectural style which was later used in the construction of Taj Mahal.

Talkatora Garden spread over 45 acres has Persian landscaping and abounds with Mughal romance. A waterfall, lily pond, an open-air theater Sur-Tall, jogging/walking tracks, a swimming pool, and a baoli that enhances the Mughal ambience. The open air-theatre has been revived and now it is being used for performance of classical dances.

Yamuna Biodiversity Park is slated to act as a heritage site and repository of approximately 50 threatened communities of Yamuna river basin. It will serve as an ideal alternative habitat for migratory and resident bird species. It will also be designed to conserve the wild genetic resources of agricultural crops and enhance ground water recharge and augment fresh water availability. The holistically envisaged park, with an area of 80 hectare will have a positive impact on the local weather patterns and conserve the micro and macro ecosystems.