A striking downtown venue that's home to both the Symphony Orchestra of the State of São Paulo (OSESP) and the City Choir, this magnificent concert hall is located in the historic Julio Prestes Train Station. The station fell into disrepair in the 1940s, but was restored 50 years later and now houses one of the most modern performance spaces in the world. (Automatic sensors adjust the ceiling to modify the acoustic levels of any piece of music.) Attending a performance is the best way to admire the space; check the website for current listings, but there are often free concerts on Sundays at 11am. To learn more about the former train station and the history of the building, take a guided tour, which is free on weekends.