This bohemian barrio has a few small museums, the best of which is Museo Pedro de Osma (San Pedro de Osma 423, tel. 01/467-0141, www.museopedrodeosma.org [1], 10 a.m.–1:30 p.m. and 2:30–6 p.m. Tues.–Sun., US$5), which holds an exquisite private collection of colonial art and furniture. The museum itself is one of Barranco’s oldest mansions and is worth a peek just for that reason.
Down the street is a small exhibit on electricity in Lima [2] at the Museo de la Electricidad (San Pedro de Osma 105, tel. 01/477-6577, http://museoelectri.perucultural.org.pe [3], 9 a.m.–1 p.m. and 2–5 p.m. Tues.–Sun., free).
A restored electric tram, which used to connect Barranco to Miraflores [4] and Lima [2], runs down the street on Sundays (US$2.75).
Links:
[1] http://www.museopedrodeosma.org
[2] http://www.moon.com/destinations/peru/lima
[3] http://museoelectri.perucultural.org.pe
[4] http://www.moon.com/destinations/peru/lima/sights/san-isidro-and-miraflores