Talsi is a town in the Courland region of Latvia. It is the administrative centre of Talsi Municipality. It is nicknamed the "green pearl of Courla…Talsi is a town in the Courland region of Latvia. It is the administrative centre of Talsi Municipality. It is nicknamed the "green pearl of Courland". It is believed that the name is derived from an old Livonian word, talusse, meaning "secluded place".