Explanation:

- Option 1: Mongolia

- Ulaanbaatar is the capital of Mongolia.

- It's the largest city and cultural heart of Mongolia.

- Option 2: Tunisia

- Tunis is the capital of Tunisia.

- Located on the northern coast of Africa.

- Option 3: Estonia

- Tallinn is the capital city of Estonia.

- Known for its well-preserved medieval architecture.

- Correct Answer

- Option 4: Lithuania

- Vilnius is the capital of Lithuania.

- Famous for its baroque architecture.

- Option 5: Latvia

- Riga is the capital of Latvia.

- Known for its wooden buildings and Art Nouveau architecture.