Oct. 8–10. All invited to this annual gathering of enthusiasts of the original Argus camera company, which operated in Ann Arbor 1936–1969. Events include presentations, exhibitions (see Galleries), a field trip to the Henry Ford Museum, meals, photo contests, and auctions. Thurs. 3–8 p.m., Fri. 10 a.m.–7 p.m., Sat. 9 a.m.–8:30 p.m., 525 W. William. $50 (members, $40) suggested donation. Preregistration required at argusmuseum.org/fall-conference. (313) 499–0551.

Oct. 10 & 11. Juried art fair featuring works by about 100 regional artists, ranging from paintings and jewelry to ceramics and fiber. Also, demos by popular local street chalk artist David Zinn (11 a.m.–1 p.m., both days), and family-friendly art-making activities. Live music TBA. Snacks & drinks available for purchase. 10 a.m.–6 p.m. (Sat.) & 10 a.m.–4 p.m. (Sun.), Main between Washington & William. Free admission. a2artoberfest.org. 

Every Wed.–Sun. A carnival atmosphere with a variety of family-oriented fall activities on this family farm, including wagon rides, a petting farm, a corn maze, and more. For an extra charge on Sat. & Sun., an apple cannon, paintball, apple or pumpkin picking, and other activities available. Cider & donuts available. Also, on Oct. 3 & 4, local artisans & crafters sell their items at the Craft Show Weekend, and on Oct. 24, young entrepreneurs sell homemade items at the Kids Market (noon–4 p.m.). No pets. 11 a.m.–6 p.m., 5565 Merritt (east of Carpenter), Ypsi. Weekend admission: $27.50 (babies under 2, free). Weekday admission: $18 (babies under 2, free), online only at wiards.com. (734) 482–7744.

Every Fri.–Sun., Sept. 19–Nov. 1. A large corn maze with 3.5 miles of trails and 3 exits to allow for routes of various lengths. Also, a U-Pick pumpkin patch, hayrides, petting zoo, pedal cars, straw maze, and yard games. On Sept. 27, Family Fun Day (11 a.m.–3 p.m.) features ice cream, balloon art, kids activities, and live music from the Saline Fiddlers. 11 a.m.–9 p.m. (Sat.), 11 a.m.–7 p.m. (Sun.), & 5–9 p.m. (Fri.), 6175 Daly, Dexter. $16 (ages 5–12, $13; age 4 & under, free with adult admission). blastcornmaze.com.

Every Fri.–Sun. A large corn maze with 3.5 miles of trails and 3 exits. Also, a u-pick pumpkin patch, hayrides, petting zoo, pedal cars, straw maze, and yard games. The corn maze is illuminated and guests get a free glow stick on Glow Maze Nights (Oct. 9, 16, & 23, 5–9 p.m.). On All You Can Carry Pumpkin Day (Oct. 25, 11 a.m.–7 p.m.), for $10 you can purchase all the pumpkins you can successfully stack and carry down the lane. On Pumpkin Smash Day (Oct. 30, 5–9 p.m.), each guest receives a free pumpkin to smash, which is then composted or fed to the farm’s animals. Costumes encouraged for the Halloween Spooktacular (Oct. 31, 11 a.m.–3 p.m.). 5–9 p.m (Fri.), 11 a.m.–9 p.m. (Sat.), 11 a.m.–7 p.m. (Sun.). 6175 Daly, Dexter. $16 (ages 5–12, $13; age 4 & under, free with adult admission). blastcornmaze.com.

Every Sat. & Sun. A chance to view LSNC birds of prey and its Critter House animals, which include frogs, turtles, snakes, and other species native to Michigan. Noon–3 p.m., 1831 Traver. $5 suggested donation. (734) 997–1553, lesliesnc.org.

Fri. Oct. 2 & 16 and every Sat. & Sun. (See review) During the Friday Adult Open Hours (age 18+ only), conservancy staffers show some animals that live in the rainforest, including a two-toed sloth, a Dumeril’s boa, an iguana, and a red-footed tortoise at 7:30 p.m. On Sat. & Sun., staffers show a two-toed sloth, a Dumeril’s boa, and an iguana at 1 & 4 p.m., and a red-footed tortoise at 2 & 3 p.m. All tickets include a chance to see the conservancy’s other animals. 7–9 p.m. (Fri.) and noon–5 p.m. (Sat. & Sun.), 4950 Ann Arbor–Saline Rd. $15 (kids ages 2–12, $13; under age 2, free) cash or credit at the door only. (734) 929–9324, thecreatureconservancy.org.

Every Fri.–Sun. Three different audiovisual planetarium shows suitable for all ages. T. Rex (noon) describes the iconic dinosaur’s scientific and cinematic history (includes scenes of dinosaur violence); The Sky Tonight (1 & 3 p.m.) explores the current night sky, with tips on how to find the cardinal directions, constellations, and planets on your own; and Tales of the Maya Skies (2 p.m.) immerses viewers in the wonders of Mayan science, examining how Mayan scholars developed a sophisticated understanding of astronomy, architecture, and mathematics. Noon, 1, 2, & 3 p.m., 1105 North University. $9 at the gift shop. Limited capacity. (734) 764–0480, ummnh.org.