What is the capital of Greece?

The capital of Greece is Athens, which has significant historical and cultural importance as one of the world's oldest cities. Renowned for its contributions to art, philosophy, and democracy, Athens was the center of Ancient Greece and has played a crucial role in the development of Western civilization. Key landmarks such as the Acropolis and the Parthenon are located there, symbolizing its rich heritage.

Other cities mentioned in the choices do not serve as the capital of Greece. Rome is the capital of Italy, Lisbon is the capital of Portugal, and Cairo is the capital of Egypt. These cities each have their own unique historical backgrounds and relevance but are unrelated to Greece in terms of being its capital.