Founded in 1921 by John Verderbar and named Oh Henry Park after the popular candy bar. Today, the ballroom continues to host ballroom dancing events weekly. In the year 2000, the Willowbrook Ballroom was voted one of only five grand ballrooms remaining in the United States still committed to ballroom dancing by Amateur Dance Magazine. The Willowbrook Ballroom has the original 6,000 square-foot maple-sprung dance floor.
The Willowbrook Ballroom is often linked to the Resurrection Mary ghost story as the ballroom where Mary last danced before her tragic death.