Richardson Farm celebrates 20 years of A-Maze-ing this fall, with opening weekend set for Saturday and Sunday, Sept. 11-12.

Billed as the “World’s Largest Corn Maze,” this year’s design celebrates all of the fun activities that go on at the farm located at 909 English Prairie Road, Spring Grove. The maze features a 9-mile trail wending through 28 acres of corn. Visitors can choose to make their way through any or all of four smaller maze segments, each with its own in-and-out.

Regular admission fees are $18 for ages 13 to 64 and $15 for ages 3 to 12 throughout September as well as on Thursdays and Fridays in October through Nov. 7. Saturdays and Sundays in October through Nov. 7 cost $22 for adults and $18 for children 3 to 12. Those 2 and younger are admitted free.

Hours are 3 to 9 p.m. Thursdays, 10 a.m. to 11 p.m. Fridays and Saturdays and noon to 9 p.m. Sundays. The farm is closed Mondays, Tuesdays and Wednesdays, except for Columbus Day on Monday, Oct. 11, when hours will be 10 a.m. to 9 p.m. Maze until Midnight opportunities are Sept. 17-18 and Oct. 22-23. All admissions must be purchased two hours before closing. Tickets are available at the farm during hours of operation.