In the basement of the Teatro Círculo, the Museo Barnes de Arte Sacro (Laprida 1235, tel. 0341/448-3784, www.teatro-elcirculo.com.ar [1], US$1.50 as part of a theater tour) exhibits Bible-themed sculptures from one of the contributors to the Monumento a la Bandera [2]. Actually seeing them, though, can be problematic; it’s open for guided tours, by reservation only, at 10:30 a.m. Monday, Wednesday, Friday, and Saturday.
For a more diverse collection of European art and artifacts (and more flexible hours), check the Museo de Arte Decorativo Firma y Odilo Estévez (Santa Fe 748, tel. 0341/480-2547, www.museoestevez.gov.ar [3], 3–8 p.m. Wed.–Fri., 10 a.m.–8 p.m. weekends, free), occupying a distinguished Italianate residence.
Links:
[1] http://www.teatro-elcirculo.com.ar
[2] http://www.moon.com/destinations/argentina/mesopotamia/santa-fe-province/rosario/sights/monumento-la-bandera
[3] http://www.museoestevez.gov.ar