(Aging Untold) - A father who lost his 2-year-old son to a furniture tip-over has built the only child-safety demonstration house in the United States to prevent similar tragedies.

Brett Horn founded Charlie's House in Kansas City, Missouri, after his son Charlie died when a 30-inch dresser fell on him in 2007.

The interactive home teaches parents about hidden dangers that experts say cause 90% of childhood accidents.