Athens is the capital city of Greece. It has a rich history that goes back to the heart of Ancient Greece, playing a crucial role in the development of democracy, philosophy, drama, and other significant aspects of civilization. It is the country's economic, transportation, and cultural center. Since ancient times, Athens is renowned for influencing other cities around the world. It is famous for its magnificent ancient ruins, such as the Parthenon, the Acropolis, the Ancient Agora, and the Theatre of Dionysus. These structures stand side by side with modern buildings, creating a unique cityscape.

The census in Greece is conducted every 10 years, with the last one in 2011, and the next one expected in 2021. According to the 2011 census, Athens had a population of 3,153,355. The city is known for its religious diversity, with the majority of the population identifying as Greek Orthodox. According to the data collected during the 2011 census, 90% of people in Athens identified themselves as Greek Orthodox, while the remaining 10% are Muslims, Catholics, Jews, and those who declared no religion. The city is home to people from various ethnic backgrounds, with Greek being the official language. The Acropolis of Athens, a UNESCO World Heritage Site, is home to several ancient buildings of great architectural and historic significance, including the Parthenon.

Athens is governed by the Athens Municipality, which is divided into seven municipal districts. The Mayor of Athens is the head of the municipality, responsible for city administration and policy-making. The Athens City Council, composed of municipal councilors elected every five years by local residents, scrutinizes the mayor's decisions and has the power to accept or reject his budget proposals each year. The municipality is responsible for local services such as education, social services, urban planning, and refuse collection.

Athens is the economic heart of Greece, contributing significantly to the country's GDP. The city thrives on commerce and has a robust service sector, which includes finance, retail, and tourism. The Port of Piraeus in Athens is one of the biggest and busiest ports in the Mediterranean, handling millions of passengers and tons of cargo each year.

Athens' infrastructure has seen major improvements since the 2004 Olympics. The Athens Metro, an essential part of the city's public transportation system, is known for its efficiency and cleanliness. The city also hosts a range of infrastructure projects, including water and sewerage systems, digital connectivity enhancements, and road works. Some of the investment is provided by the private sector, and the city's digital infrastructure continues to improve.