Quick facts about Buenos Aires

Currency: Argentine Peso (ARS)
Language: Spanish
Population: ≈ 3 million (Buenos Aires City); ≈ 15 million (Buenos Aires Metropolitan Area)
Climate: Humid subtropical, with hot summers and mild winters
Time Zone: Argentina Time (ART), UTC-3
Visa: Argentina allows visa-free entry for many nationalities, including most EU citizens, as well as visitors from the U.S., Canada, and Australia for up to 90 days.