Get in free to the Harvard Art Museums. The Harvard Art Museums – The Fogg Art and Busch-Reisinger museums at 32 Quincy St. are closed for renovations, leaving the combined collection at the Arthur M. Sackler Museum – offer free admission and a 10 percent discount on all new membership purchases Saturday as part of the Association of Art Museum Directors’ Art Museum Day, coinciding with International Museum Day. Exhibitions on display include “Re-View,” an overview of objects from all three museums including American, Latin American, European, Islamic, and Asian art from antiquity to the present, and “In Harmony: The Norma Jean Calderwood Collection of Islamic Art.” The museum is open from 10 a.m. to 5 p.m. at 485 Broadway.

Get photographed on the red carpet. Painter Danielle Festa is literally laying down a red carpet in Union Square and asking people to pose for photos in their favorite street fashion. Festa has a Somerville Arts Council Fellowship Grant for the project, which will culminate in an Oct. 12 outdoor exhibition at the same spot. Her paintings focus on the influence of attire, and she says she is “looking for a true sampling of the variety Union Square fashion has to offer.” The shoot takes place from 11 a.m. to 2 p.m. Saturday at 66 Union Square, Somerville.

See the art of the East/Central Cambridge Open Studios. The artists of Area IV, Cambridgeport, Central Square, Inman Square, Kendall Square, Lechmere and Mid-Cambridge open their doors to art lovers and art buyers from noon to 6 p.m. Saturday and Sunday. (The image above is from the Gallery 263 Artist Members Show, taking place as part of the open studios.) The locations are in this downloadable brochure.

Tune in to Porchfest. The “decentralized music festival” of PorchFest has been around since 2011 to gain exposure for local musicians and build a sense of community for listeners. Dozens of porches, stoops and yards throughout the city will host live, local music, staggered in two-hour slots so that you start over near McGrath Highway and work your way gradually west with the help of this handy map. The event runs from noon to 6 p.m. Saturday.

Experience “Love on the Run” via Rachmaninoff, Prokofiev and Verdi. The Cambridge Symphony Orchestra, led by music director Cynthia Woods, presents its final Masterworks concert on this season’s theme of “Legends and Lore” with a concert called “Love on the Run.” World-class pianist Sergey Schepkin will be the orchestra’s piano soloist in Rachmaninoff Piano Concerto No. 2 in C minor. The orchestra will also perform Prokofiev, Suites No. 1 and 2, from “Romeo & Juliet” and Verdi’s Overture to “La forza del destino” – another tragic love story taking place in Spain and Italy in the 18th century among marquises, monasteries, duellists and battlefields. Tickets are $25 for general admission or $15 for students and seniors and can be bought in advance or at the door at 8 p.m. Saturday at Harvard University’s Sanders Theatre, 45 Quincy St., Harvard Square.

Have a literary weekend. In addition to the Friends of the Somerville Public Library’s Spring Book Sale from 10 a.m. to 4 p.m. Saturday and 1:30 to 3:30 p.m. Sunday at 79 Highland Ave., Somerville (this year particularly strong in history, biography, arts and foreign language as well as DVDs and fiction), there are free readings: from Pink Narcissus Press authors (the Auburn, Mass., publisher specializes in “quirky fantasy and other speculative fiction”) from 3 to 4 p.m. Saturday at The Book Shop, 694 Broadway, Ball Square, Somerville; and by famed author Paul Theroux at 7 p.m. Sunday at the Harvard Book Store, 1256 Massachusetts Ave., Harvard Square. Theroux will be discussing “The Last Train to Zona Verde: My Ultimate African Safari.