Piraeus an integral part of the Greek capital. The port of Piraeus is now an important international port, and the largest in the country. Piraeus is situated in the southwest part of the central plain of Attica, also widely known as the "Athens or Attica Basin", which the Athens agglomeration (urban area) sprawls across. Piraeus is bounded by the Mount Aigaleo to the northwest, and the Saronic Gulf to the south and west, and connected with the rest of the Athens Urban Area to the east and northeast. The "city proper" of Piraeus consists of a rocky peninsula, originally an island,
Piraeus currently uses as home ground the Municipal Stadium Nikaia. Ionikos of Nikaia had a longstanding presence in Super League Greece and its home ground is the Municipal Stadium Neapoli. In basketball, Olympiacos B.C. is the only major club from Piraeus, one of the most successful at domestic and European level, and its home arena is the Peace and Friendship Stadium, while the volleyball department of the same club, Olympiacos S.C., is the dominant domestically and has made great success in European competitions as well. Piraeus rides really high in water polo, where Ethnikos Piraeus and Olympiacos departments have entirely dominated