Which place of Uttar Pradesh is known as 'Glass City of India'?

Firozabad, also known as the glass city of India and the city of bangles. Built by Tughlaq king, Feroz Shah Tughlaq, it is renowned for its glass bangles and other glass products. Local stories suggest that the city’s glass industry – which continues to thrive today – began when travellers brought glass articles to India. These objects were collected and heated in a furnace known as ‘bhainsa bhatti’ and remoulded to create bangles, marking the beginning of the trade. A suburb known as Suhag Nagar is a hub for glass bangles of all varieties in Firozabad.