Attractive nuisance doctrine

The attractive nuisance doctrine applies to the law of torts in some jurisdictions. It states that a landowner may be held liable for injuries to children trespassing on the land if the injury is caused by an object on the land that is likely to attract children. The doctrine is designed to protect children who are unable to appreciate the risk posed by the object, by imposing a liability on the landowner. The doctrine has been applied to hold landowners liable for injuries caused by abandoned cars, piles of lumber or sand, trampolines, and swimming pools. However, it can be applied to virtually anything on the property of the landowner.
There is no set cutoff point that defines youth. The courts will evaluate each "child" on a case-by-case basis to see if the "child" qualifies as a youth. If it is determined that the child was able to understand and appreciate the hazard, the doctrine of attractive nuisance will not likely apply.
Under the old common law, the plaintiff (either the child, or a parent suing on the child's behalf) had to show that it was the hazardous condition itself which lured the child onto the landowner's property. However, most jurisdictions have statutorily altered this condition, and now require only that the injury was foreseeable by the landowner.
History.
The attractive nuisance doctrine emerged from case law in England, starting with "Lynch v. Nurdin" in 1841. In that case, an opinion by Lord Chief Justice Thomas Denman held that the owner of a cart left unattended on the street could be held liable for injuries to a child who climbed onto the cart and fell. The doctrine was first applied in the United States in "Sioux City & Pacific Railroad Co. v. Stout", an 1873 case from Nebraska in which a railroad company was held liable for injuries to a child who climbed onto an unsecured railway turntable. The term "attractive nuisance" was first used in 1875 in "Keffe v. Milwaukee & St. Paul Railway Co.", a Minnesota case. The doctrine has since been adopted in some other common law jurisdictions, such as Canada, but not universally.
Conditions.
According to the "Restatement of Torts" standard, which is followed in many jurisdictions in the United States, there are five conditions that must be met for a land owner to be liable for tort damages to a child trespasser as a result of artificial hazards. 
(See Restatement of Torts §339).
Jurisdictions.
US states that use the Restatement test include: