The Butantan Institute is considered one of the most famous research centers around the world, as it is the largest producer of immunological drugs and antitoxins in Latin America. The institute is known worldwide for its collection of poisonous snakes, lizards, spiders, insects and scorpions, and it develops anti-venoms for them and for many diseases such as rabies and tuberculosis. Tourists can visit the institute and see the snakes and reptiles in it.