Take a look at other pumpkin farms, similar to Heap's Giant Pumpkin Farm, across Illinois:

The family-owned Bengtson Pumpkin Farm in Homer Glen hosts families and groups each year for its Bengtson’s Pumpkin Fest – a month-long fall festival that features a barnyard animal petting zoo, a 2-acre corn maze, pony and camel rides, a haunted barn, pig races, and a pumpkin chucker. The farm boasts a carnival atmosphere with a number of kid-friendly amusement rides, including the 90-foot, mega-fun slide. Kids can also learn about farming in the Bengtsonville Kids Village and at the simulated milking cow station.
Address: 13341 W. 151st St., Homer Glen, IL 60491
Dates: Sept. 15-Oct. 30
Hours: Daily from 10 a.m.-8 p.m.
Admission: $9.99 ages 3 and up Monday-Thursday; $13.99 ages 3 and up Friday-Sunday
Contact: pumpkinfarm.com, (708) 301-3276