Staying in Philly? See what's going on at Penn and around the city:

All Weekend

• Cai Guo-Qiang: Fireflies Pedicab Art Interactive Installation; 6pm-10pm; Benjamin Franklin Parkway; Free

• Monument Lab; Labs open Wednesday–Thursday: 4-7pm, Saturday–Sunday: 12-5pm; All around the city

• DesignPhiladelphia; Times and locations variable

Thursday, October 5

• Penn Knitters; 12pm; Penn Women's Center

• Night Market--Food Truck Extravaganza; 6pm-10pm; Italian Market, Washington Ave & 9th St.

• Philadelphia Orchestra Opening Night; 7pm; Kimmel Center for the Performing Arts, 300 S. Broad St.

• Icarus Movie Screening; 5-8pm; Annenberg Center for the Performing Arts, Harold Prince Theater, 3680 Walnut St

• The Pioneers of Pixels, Feedback and Glitch Movie Screening; 7pm; International House Philadelphia, 3701 Chestnut Street; $8 for students

• College House Cup: Quizzo Night; 9pm-10pm; Rodin Rooftop Lounge

Friday, October 6

• BalletX; 8 p.m; Zellerbach Theatre. Also October 7, 2 p.m.

• (W) Volleyball vs. Harvard; 7 p.m; The Palestra

Saturday, October 7

• Midtown Village Fall Festival; 12pm-8pm; Broad to 11th Street and Market to Spruce Street

• (W) Field Hockey vs. Dartmouth; noon; Ellen Vagelos Field

• (W) Volleyball vs. Dartmouth; 5 p.m; The Palestra

Sunday, October 8

• Outfest, Philly's largest LGBTQ event; 12pm-6pm; 13th and Locust

• Old City Fest; 11am-6pm; 3rd and Arch

• The Darkside Movie Screening; 2pm; Rainey Auditorium, Penn Museum; free w/museum admission (Wolf Humanities Forum, Museum).