A rather small privately owned "iguana zoo" where you can learn more about the protection of these endangered reptiles.
More information (Spanish) http://www.en-mexico.com.mx/manzanillo/iguanario-archundia/
Address Calle 21 de Marzo 521, 28200 Manzanillo, Colima, Mexico
Coordinates 19°2'48.939" N -104°19'5.938" E