At which place in New Delhi world's largest Charkha (9 ft wide, 17 ft tall and 30 ft long) was recently...

At which place in New Delhi world's largest Charkha (9 ft wide, 17 ft tall and 30 ft long) was recently inaugurated by Shri Kalraj Mishra, Union Minister for MSME to commemorate the centenary year of Mahatma Gandhi's return from South Africa?