Delaware

fRockwood Mansion / Museum By Katie Snow
610 Shipley Road
Wilmington, Delaware 19809

Built in 1851 for Quaker Merchant Joseph Shipley, this Gothic Revival Home was held by his descendants the Bringhurst Family until it was donated to New Castle County in 1973 and turned into a park and event facility.

It is said it is one of the most haunted locations in Delaware. From footsteps in the dark to giggling children at play when none are present, this mansion was shown on my ghost story presented by the Bio Channel.
It not only holds events but also ghost tours and investigations of this large almost chilling property.

Sources
Deleware Online
Haunted Places