Mayur Vihar is an upmarket residential area in East Delhi close to the Noida-Delhi border, situated just across the Yamuna River, and is divided into three distinct phases. As the name suggests, it has been the dwelling of peacocks. Even today, the area has a closed sanctuary dedicated to the conservation of peacocks. This residential area came into existence in 1979–80, back when the trans-Yamuna area, part of today's East Delhi was sparsely populated. The government decided to sell the Delhi Development Authority (DDA) flats to employees of Public Sector Units (PSU's) and semi-PSUs like the BHEL, among others. This was also an experiment to integrate people belonging to various economic brackets i.e. High-Income Groups (HIGs), Middle-Income Groups (MIGs) and Low-Income Groups (LIGs) in one community. The residential units in Mayur Vihar are a relatively recent phenomenon and were developed in three phases. It is well connected by high-frequency buses and is serviced by the Blue Line and Pink Line of Delhi Metro.