Coimbatore is a city in the south Indian state of Tamil Nadu. To the northwest is the centuries-old, Dravidian-style Arulmigu Subramaniyaswami Temple, Marudamalai. The colorful and intricately carved Arulmigu Patteeswarar Swamy Temple lies southeast of here. In the center, the Gass Forest Museum has a huge collection of preserved animals and tree trunks. Southeast, birds and butterflies inhabit Singanallur Lake.Coimbatore is also famous for foundry and automobile industries, manufacturing of textile industry equipment's, spares, motor pump sets, wet grinders and varied engineering goods and services. The development of Hydro electricity from the Pykara Falls in the 1930 led to a cotton boom in Coimbatore.