Croatia City is a term used to refer to the capital of Croatia, Zagreb. Zagreb is a city with a population of over 800, 000 people and is located in the northwest of the country. It is known for its rich culture and history, as well as its many museums and galleries. Nikola Tesla, the famous inventor and scientist, was born in the nearby town of Smiljan in what is now Serbia. Tesla is remembered for his contributions to the development of electricity and radio communication. Serbia is a neighboring country of Croatia, located to the east of Croatia. It has a population of over 7 million people and is known for its diverse culture and history.