Jack London State Historic Park is hosting its 30th annual Plowing Play Day, which is a free family event presented by the North Coast Draft Horse and Mule Association. You'll see harnessing and plowing demonstrations, get free horse-drawn wagon rides, and medieval horseback Skill at Arms. You'll see all kinds of horses (including the famous Clydesdales). Picnic food is available.
What: Plowing Play Day
When: May 19 from 10-4
Where: Jack London State Historic Park (2400 London Ranch Road, Glen Ellen)
Cost: free (but $10/parking)