Mother Farm (マザー牧場, Mother Bokujō) is more than just a farm, it's a vast piece of land housing a large variety of animals and amusement park rides. The farm also has a restaurant with an observatory on its roof, access to a variety of activities such as bungee jumping and zip lining and even live animal shows.
There are regular direct buses from Kimitsu station and Sanukimachi station on the JR Uchibo line, and one bus a day from Hama Kanaya station, also on the JR Uchibo line.
A couple of hours east of Tokyo, Mother Bokujo farm in Chiba Prefecture is holding its annual Autumn Festival from September 15th to November 25th, with attractions and events for children and adults. The farm is a great place to spend with the family and has a lot of space.