Colombia is a place.
Colombia ( k ) , is a sovereign state largely situated in the northwest of South America , with territories in Central America . The territory of what is now Colombia was originally inhabited by indigenous peoples , with as most advanced the Muisca , Quimbaya and the Tairona . Colombia is one of the most ethnically and linguistically diverse countries in the world , and thereby possesses a rich cultural heritage . Ecologically , it is one of the world 's 17 megadiverse countries , and the most densely biodiverse of these per square kilometer .